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Finding the Fourth Proportional to 658.26, 985.33 and 492.75

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Solution

The fourth proportional to 658.26, 985.33 and 492.75 is: 737.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.26 : 985.33 = 492.75 : x
  2. Step 2: Convert to fraction form
    658.26/985.33 = 492.75/x
  3. Step 3: Cross multiply
    658.26x = 985.33 × 492.75
  4. Step 4: Simplify right side
    658.26x = 485,521.36
  5. Step 5: Solve for x
    x = 485,521.36/658.26
  6. Step 6: Final answer
    x = 737.58

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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.