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Finding the Fourth Proportional to 697.38, 962.28 and 402.59

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Solution

The fourth proportional to 697.38, 962.28 and 402.59 is: 555.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.38 : 962.28 = 402.59 : x
  2. Step 2: Convert to fraction form
    697.38/962.28 = 402.59/x
  3. Step 3: Cross multiply
    697.38x = 962.28 × 402.59
  4. Step 4: Simplify right side
    697.38x = 387,404.31
  5. Step 5: Solve for x
    x = 387,404.31/697.38
  6. Step 6: Final answer
    x = 555.51

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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.