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Finding the Fourth Proportional to 757.28, 1,044.90 and 425.69

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Solution

The fourth proportional to 757.28, 1,044.90 and 425.69 is: 587.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    757.28 : 1,044.90 = 425.69 : x
  2. Step 2: Convert to fraction form
    757.28/1,044.90 = 425.69/x
  3. Step 3: Cross multiply
    757.28x = 1,044.90 × 425.69
  4. Step 4: Simplify right side
    757.28x = 444,802.17
  5. Step 5: Solve for x
    x = 444,802.17/757.28
  6. Step 6: Final answer
    x = 587.37

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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.