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Finding the Fourth Proportional to 697.20, 962.14 and 382.45

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Solution

The fourth proportional to 697.20, 962.14 and 382.45 is: 527.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.20 : 962.14 = 382.45 : x
  2. Step 2: Convert to fraction form
    697.20/962.14 = 382.45/x
  3. Step 3: Cross multiply
    697.20x = 962.14 × 382.45
  4. Step 4: Simplify right side
    697.20x = 367,970.44
  5. Step 5: Solve for x
    x = 367,970.44/697.20
  6. Step 6: Final answer
    x = 527.79

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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.