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Finding the Fourth Proportional to 697.62, 959.92 and 681.22

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Solution

The fourth proportional to 697.62, 959.92 and 681.22 is: 937.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.62 : 959.92 = 681.22 : x
  2. Step 2: Convert to fraction form
    697.62/959.92 = 681.22/x
  3. Step 3: Cross multiply
    697.62x = 959.92 × 681.22
  4. Step 4: Simplify right side
    697.62x = 653,916.70
  5. Step 5: Solve for x
    x = 653,916.70/697.62
  6. Step 6: Final answer
    x = 937.35

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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.