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Finding the Fourth Proportional to 1,043.84, 1,440.75 and 624.44

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Solution

The fourth proportional to 1,043.84, 1,440.75 and 624.44 is: 861.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043.84 : 1,440.75 = 624.44 : x
  2. Step 2: Convert to fraction form
    1,043.84/1,440.75 = 624.44/x
  3. Step 3: Cross multiply
    1,043.84x = 1,440.75 × 624.44
  4. Step 4: Simplify right side
    1,043.84x = 899,654.73
  5. Step 5: Solve for x
    x = 899,654.73/1,043.84
  6. Step 6: Final answer
    x = 861.87

Related Problems

Find fourth proportional to 521.92, 720.38 and 312.22
Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.