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Finding the Fourth Proportional to 115.33, 159.06 and 71.02

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Solution

The fourth proportional to 115.33, 159.06 and 71.02 is: 97.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.33 : 159.06 = 71.02 : x
  2. Step 2: Convert to fraction form
    115.33/159.06 = 71.02/x
  3. Step 3: Cross multiply
    115.33x = 159.06 × 71.02
  4. Step 4: Simplify right side
    115.33x = 11,297.05
  5. Step 5: Solve for x
    x = 11,297.05/115.33
  6. Step 6: Final answer
    x = 97.95

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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.