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Finding the Fourth Proportional to 147.44, 220.16 and 116.66

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Solution

The fourth proportional to 147.44, 220.16 and 116.66 is: 174.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.44 : 220.16 = 116.66 : x
  2. Step 2: Convert to fraction form
    147.44/220.16 = 116.66/x
  3. Step 3: Cross multiply
    147.44x = 220.16 × 116.66
  4. Step 4: Simplify right side
    147.44x = 25,684.71
  5. Step 5: Solve for x
    x = 25,684.71/147.44
  6. Step 6: Final answer
    x = 174.20

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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.