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Finding the Fourth Proportional to 232.66, 320.96 and 153.87

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Solution

The fourth proportional to 232.66, 320.96 and 153.87 is: 212.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.66 : 320.96 = 153.87 : x
  2. Step 2: Convert to fraction form
    232.66/320.96 = 153.87/x
  3. Step 3: Cross multiply
    232.66x = 320.96 × 153.87
  4. Step 4: Simplify right side
    232.66x = 49,386.12
  5. Step 5: Solve for x
    x = 49,386.12/232.66
  6. Step 6: Final answer
    x = 212.27

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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.