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Finding the Fourth Proportional to 658.45, 987.24 and 350.11

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Solution

The fourth proportional to 658.45, 987.24 and 350.11 is: 524.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.45 : 987.24 = 350.11 : x
  2. Step 2: Convert to fraction form
    658.45/987.24 = 350.11/x
  3. Step 3: Cross multiply
    658.45x = 987.24 × 350.11
  4. Step 4: Simplify right side
    658.45x = 345,642.60
  5. Step 5: Solve for x
    x = 345,642.60/658.45
  6. Step 6: Final answer
    x = 524.93

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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.