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Finding the Fourth Proportional to 1,517.14, 2,275.71 and 651.25

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Solution

The fourth proportional to 1,517.14, 2,275.71 and 651.25 is: 976.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.14 : 2,275.71 = 651.25 : x
  2. Step 2: Convert to fraction form
    1,517.14/2,275.71 = 651.25/x
  3. Step 3: Cross multiply
    1,517.14x = 2,275.71 × 651.25
  4. Step 4: Simplify right side
    1,517.14x = 1,482,056.14
  5. Step 5: Solve for x
    x = 1,482,056.14/1,517.14
  6. Step 6: Final answer
    x = 976.88

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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.