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Finding the Fourth Proportional to 697.27, 962.18 and 402.48

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Solution

The fourth proportional to 697.27, 962.18 and 402.48 is: 555.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.27 : 962.18 = 402.48 : x
  2. Step 2: Convert to fraction form
    697.27/962.18 = 402.48/x
  3. Step 3: Cross multiply
    697.27x = 962.18 × 402.48
  4. Step 4: Simplify right side
    697.27x = 387,258.21
  5. Step 5: Solve for x
    x = 387,258.21/697.27
  6. Step 6: Final answer
    x = 555.39

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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.