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Finding the Fourth Proportional to 658.73, 987.35 and 242.08

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Solution

The fourth proportional to 658.73, 987.35 and 242.08 is: 362.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.73 : 987.35 = 242.08 : x
  2. Step 2: Convert to fraction form
    658.73/987.35 = 242.08/x
  3. Step 3: Cross multiply
    658.73x = 987.35 × 242.08
  4. Step 4: Simplify right side
    658.73x = 239,014.01
  5. Step 5: Solve for x
    x = 239,014.01/658.73
  6. Step 6: Final answer
    x = 362.84

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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.