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Finding the Fourth Proportional to 225.17, 337.78 and 109.53

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Solution

The fourth proportional to 225.17, 337.78 and 109.53 is: 164.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.17 : 337.78 = 109.53 : x
  2. Step 2: Convert to fraction form
    225.17/337.78 = 109.53/x
  3. Step 3: Cross multiply
    225.17x = 337.78 × 109.53
  4. Step 4: Simplify right side
    225.17x = 36,996.77
  5. Step 5: Solve for x
    x = 36,996.77/225.17
  6. Step 6: Final answer
    x = 164.31

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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.