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Finding the Fourth Proportional to 649.50, 974.25 and 162.55

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Solution

The fourth proportional to 649.50, 974.25 and 162.55 is: 243.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.50 : 974.25 = 162.55 : x
  2. Step 2: Convert to fraction form
    649.50/974.25 = 162.55/x
  3. Step 3: Cross multiply
    649.50x = 974.25 × 162.55
  4. Step 4: Simplify right side
    649.50x = 158,361.50
  5. Step 5: Solve for x
    x = 158,361.50/649.50
  6. Step 6: Final answer
    x = 243.82

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Double scale
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Similar ratio
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1.5x scale

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.