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Finding the Fourth Proportional to 697.45, 962.47 and 382.71

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Solution

The fourth proportional to 697.45, 962.47 and 382.71 is: 528.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.45 : 962.47 = 382.71 : x
  2. Step 2: Convert to fraction form
    697.45/962.47 = 382.71/x
  3. Step 3: Cross multiply
    697.45x = 962.47 × 382.71
  4. Step 4: Simplify right side
    697.45x = 368,346.89
  5. Step 5: Solve for x
    x = 368,346.89/697.45
  6. Step 6: Final answer
    x = 528.13

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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.