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Finding the Fourth Proportional to 171.98, 237.32 and 98.30

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Solution

The fourth proportional to 171.98, 237.32 and 98.30 is: 135.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.98 : 237.32 = 98.30 : x
  2. Step 2: Convert to fraction form
    171.98/237.32 = 98.30/x
  3. Step 3: Cross multiply
    171.98x = 237.32 × 98.30
  4. Step 4: Simplify right side
    171.98x = 23,327.62
  5. Step 5: Solve for x
    x = 23,327.62/171.98
  6. Step 6: Final answer
    x = 135.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.