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Finding the Fourth Proportional to 658.35, 985.23 and 636.48

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Solution

The fourth proportional to 658.35, 985.23 and 636.48 is: 952.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.35 : 985.23 = 636.48 : x
  2. Step 2: Convert to fraction form
    658.35/985.23 = 636.48/x
  3. Step 3: Cross multiply
    658.35x = 985.23 × 636.48
  4. Step 4: Simplify right side
    658.35x = 627,079.19
  5. Step 5: Solve for x
    x = 627,079.19/658.35
  6. Step 6: Final answer
    x = 952.50

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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.