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Finding the Fourth Proportional to 658.20, 986.27 and 247.23

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Solution

The fourth proportional to 658.20, 986.27 and 247.23 is: 370.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.20 : 986.27 = 247.23 : x
  2. Step 2: Convert to fraction form
    658.20/986.27 = 247.23/x
  3. Step 3: Cross multiply
    658.20x = 986.27 × 247.23
  4. Step 4: Simplify right side
    658.20x = 243,834.30
  5. Step 5: Solve for x
    x = 243,834.30/658.20
  6. Step 6: Final answer
    x = 370.46

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Double scale
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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.