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Finding the Fourth Proportional to 153.49, 211.19 and 132.70

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Solution

The fourth proportional to 153.49, 211.19 and 132.70 is: 182.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.49 : 211.19 = 132.70 : x
  2. Step 2: Convert to fraction form
    153.49/211.19 = 132.70/x
  3. Step 3: Cross multiply
    153.49x = 211.19 × 132.70
  4. Step 4: Simplify right side
    153.49x = 28,024.25
  5. Step 5: Solve for x
    x = 28,024.25/153.49
  6. Step 6: Final answer
    x = 182.58

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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.