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Finding the Fourth Proportional to 90.85, 136.29 and 32.27

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Solution

The fourth proportional to 90.85, 136.29 and 32.27 is: 48.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90.85 : 136.29 = 32.27 : x
  2. Step 2: Convert to fraction form
    90.85/136.29 = 32.27/x
  3. Step 3: Cross multiply
    90.85x = 136.29 × 32.27
  4. Step 4: Simplify right side
    90.85x = 4,398.00
  5. Step 5: Solve for x
    x = 4,398.00/90.85
  6. Step 6: Final answer
    x = 48.41

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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.