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Finding the Fourth Proportional to 697.62, 962.88 and 402.96

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Solution

The fourth proportional to 697.62, 962.88 and 402.96 is: 556.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.62 : 962.88 = 402.96 : x
  2. Step 2: Convert to fraction form
    697.62/962.88 = 402.96/x
  3. Step 3: Cross multiply
    697.62x = 962.88 × 402.96
  4. Step 4: Simplify right side
    697.62x = 388,002.12
  5. Step 5: Solve for x
    x = 388,002.12/697.62
  6. Step 6: Final answer
    x = 556.18

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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.