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Finding the Fourth Proportional to 149.34, 224.55 and 141.18

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Solution

The fourth proportional to 149.34, 224.55 and 141.18 is: 212.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.34 : 224.55 = 141.18 : x
  2. Step 2: Convert to fraction form
    149.34/224.55 = 141.18/x
  3. Step 3: Cross multiply
    149.34x = 224.55 × 141.18
  4. Step 4: Simplify right side
    149.34x = 31,701.97
  5. Step 5: Solve for x
    x = 31,701.97/149.34
  6. Step 6: Final answer
    x = 212.28

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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.