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Finding the Fourth Proportional to 1,617.14, 2,425.46 and 521.36

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Solution

The fourth proportional to 1,617.14, 2,425.46 and 521.36 is: 781.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617.14 : 2,425.46 = 521.36 : x
  2. Step 2: Convert to fraction form
    1,617.14/2,425.46 = 521.36/x
  3. Step 3: Cross multiply
    1,617.14x = 2,425.46 × 521.36
  4. Step 4: Simplify right side
    1,617.14x = 1,264,523.09
  5. Step 5: Solve for x
    x = 1,264,523.09/1,617.14
  6. Step 6: Final answer
    x = 781.95

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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.