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Finding the Fourth Proportional to 575.33, 862.98 and 142.49

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Solution

The fourth proportional to 575.33, 862.98 and 142.49 is: 213.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.33 : 862.98 = 142.49 : x
  2. Step 2: Convert to fraction form
    575.33/862.98 = 142.49/x
  3. Step 3: Cross multiply
    575.33x = 862.98 × 142.49
  4. Step 4: Simplify right side
    575.33x = 122,961.71
  5. Step 5: Solve for x
    x = 122,961.71/575.33
  6. Step 6: Final answer
    x = 213.73

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Double scale
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Similar ratio
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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.