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Finding the Fourth Proportional to 243.29, 365.04 and 89.17

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Solution

The fourth proportional to 243.29, 365.04 and 89.17 is: 133.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.29 : 365.04 = 89.17 : x
  2. Step 2: Convert to fraction form
    243.29/365.04 = 89.17/x
  3. Step 3: Cross multiply
    243.29x = 365.04 × 89.17
  4. Step 4: Simplify right side
    243.29x = 32,550.62
  5. Step 5: Solve for x
    x = 32,550.62/243.29
  6. Step 6: Final answer
    x = 133.80

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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.