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Finding the Fourth Proportional to 2,254.87, 3,381.76 and 611.47

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Solution

The fourth proportional to 2,254.87, 3,381.76 and 611.47 is: 917.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,254.87 : 3,381.76 = 611.47 : x
  2. Step 2: Convert to fraction form
    2,254.87/3,381.76 = 611.47/x
  3. Step 3: Cross multiply
    2,254.87x = 3,381.76 × 611.47
  4. Step 4: Simplify right side
    2,254.87x = 2,067,844.79
  5. Step 5: Solve for x
    x = 2,067,844.79/2,254.87
  6. Step 6: Final answer
    x = 917.06

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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.