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Finding the Fourth Proportional to 160.33, 240.65 and 91.86

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Solution

The fourth proportional to 160.33, 240.65 and 91.86 is: 137.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.33 : 240.65 = 91.86 : x
  2. Step 2: Convert to fraction form
    160.33/240.65 = 91.86/x
  3. Step 3: Cross multiply
    160.33x = 240.65 × 91.86
  4. Step 4: Simplify right side
    160.33x = 22,105.51
  5. Step 5: Solve for x
    x = 22,105.51/160.33
  6. Step 6: Final answer
    x = 137.88

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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.