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Finding the Fourth Proportional to 153.56, 229.42 and 147.08

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Solution

The fourth proportional to 153.56, 229.42 and 147.08 is: 219.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.56 : 229.42 = 147.08 : x
  2. Step 2: Convert to fraction form
    153.56/229.42 = 147.08/x
  3. Step 3: Cross multiply
    153.56x = 229.42 × 147.08
  4. Step 4: Simplify right side
    153.56x = 33,743.09
  5. Step 5: Solve for x
    x = 33,743.09/153.56
  6. Step 6: Final answer
    x = 219.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.