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Finding the Fourth Proportional to 2,258.62, 3,387.90 and 615.14

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Solution

The fourth proportional to 2,258.62, 3,387.90 and 615.14 is: 922.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,258.62 : 3,387.90 = 615.14 : x
  2. Step 2: Convert to fraction form
    2,258.62/3,387.90 = 615.14/x
  3. Step 3: Cross multiply
    2,258.62x = 3,387.90 × 615.14
  4. Step 4: Simplify right side
    2,258.62x = 2,084,032.81
  5. Step 5: Solve for x
    x = 2,084,032.81/2,258.62
  6. Step 6: Final answer
    x = 922.70

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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.