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Finding the Fourth Proportional to 1,104.75, 1,523.96 and 684.96

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Solution

The fourth proportional to 1,104.75, 1,523.96 and 684.96 is: 944.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,104.75 : 1,523.96 = 684.96 : x
  2. Step 2: Convert to fraction form
    1,104.75/1,523.96 = 684.96/x
  3. Step 3: Cross multiply
    1,104.75x = 1,523.96 × 684.96
  4. Step 4: Simplify right side
    1,104.75x = 1,043,848.22
  5. Step 5: Solve for x
    x = 1,043,848.22/1,104.75
  6. Step 6: Final answer
    x = 944.87

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Find fourth proportional to 552.38, 761.98 and 342.48
Half scale
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Double scale
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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.