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Finding the Fourth Proportional to 147.25, 219.84 and 124.19

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Solution

The fourth proportional to 147.25, 219.84 and 124.19 is: 185.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.25 : 219.84 = 124.19 : x
  2. Step 2: Convert to fraction form
    147.25/219.84 = 124.19/x
  3. Step 3: Cross multiply
    147.25x = 219.84 × 124.19
  4. Step 4: Simplify right side
    147.25x = 27,301.00
  5. Step 5: Solve for x
    x = 27,301.00/147.25
  6. Step 6: Final answer
    x = 185.40

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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.