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Finding the Fourth Proportional to 160.29, 240.06 and 90.72

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Solution

The fourth proportional to 160.29, 240.06 and 90.72 is: 135.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.29 : 240.06 = 90.72 : x
  2. Step 2: Convert to fraction form
    160.29/240.06 = 90.72/x
  3. Step 3: Cross multiply
    160.29x = 240.06 × 90.72
  4. Step 4: Simplify right side
    160.29x = 21,778.24
  5. Step 5: Solve for x
    x = 21,778.24/160.29
  6. Step 6: Final answer
    x = 135.87

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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.