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Finding the Fourth Proportional to 452.68, 624.42 and 286.76

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Solution

The fourth proportional to 452.68, 624.42 and 286.76 is: 395.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.68 : 624.42 = 286.76 : x
  2. Step 2: Convert to fraction form
    452.68/624.42 = 286.76/x
  3. Step 3: Cross multiply
    452.68x = 624.42 × 286.76
  4. Step 4: Simplify right side
    452.68x = 179,060.24
  5. Step 5: Solve for x
    x = 179,060.24/452.68
  6. Step 6: Final answer
    x = 395.56

Related Problems

Find fourth proportional to 226.34, 312.21 and 143.38
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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.