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Finding the Fourth Proportional to 232.25, 320.58 and 149.45

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Solution

The fourth proportional to 232.25, 320.58 and 149.45 is: 206.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.25 : 320.58 = 149.45 : x
  2. Step 2: Convert to fraction form
    232.25/320.58 = 149.45/x
  3. Step 3: Cross multiply
    232.25x = 320.58 × 149.45
  4. Step 4: Simplify right side
    232.25x = 47,909.08
  5. Step 5: Solve for x
    x = 47,909.08/232.25
  6. Step 6: Final answer
    x = 206.29

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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.