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Finding the Fourth Proportional to 697.17, 961.59 and 402.33

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Solution

The fourth proportional to 697.17, 961.59 and 402.33 is: 554.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.17 : 961.59 = 402.33 : x
  2. Step 2: Convert to fraction form
    697.17/961.59 = 402.33/x
  3. Step 3: Cross multiply
    697.17x = 961.59 × 402.33
  4. Step 4: Simplify right side
    697.17x = 386,876.50
  5. Step 5: Solve for x
    x = 386,876.50/697.17
  6. Step 6: Final answer
    x = 554.92

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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.