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Finding the Fourth Proportional to 658.68, 990.36 and 602.76

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Solution

The fourth proportional to 658.68, 990.36 and 602.76 is: 906.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.68 : 990.36 = 602.76 : x
  2. Step 2: Convert to fraction form
    658.68/990.36 = 602.76/x
  3. Step 3: Cross multiply
    658.68x = 990.36 × 602.76
  4. Step 4: Simplify right side
    658.68x = 596,949.39
  5. Step 5: Solve for x
    x = 596,949.39/658.68
  6. Step 6: Final answer
    x = 906.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.