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Finding the Fourth Proportional to 697.82, 962.96 and 387.32

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Solution

The fourth proportional to 697.82, 962.96 and 387.32 is: 534.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.82 : 962.96 = 387.32 : x
  2. Step 2: Convert to fraction form
    697.82/962.96 = 387.32/x
  3. Step 3: Cross multiply
    697.82x = 962.96 × 387.32
  4. Step 4: Simplify right side
    697.82x = 372,966.92
  5. Step 5: Solve for x
    x = 372,966.92/697.82
  6. Step 6: Final answer
    x = 534.48

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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.