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Finding the Fourth Proportional to 907.29, 1,251.92 and 514.17

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Solution

The fourth proportional to 907.29, 1,251.92 and 514.17 is: 709.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.29 : 1,251.92 = 514.17 : x
  2. Step 2: Convert to fraction form
    907.29/1,251.92 = 514.17/x
  3. Step 3: Cross multiply
    907.29x = 1,251.92 × 514.17
  4. Step 4: Simplify right side
    907.29x = 643,700.99
  5. Step 5: Solve for x
    x = 643,700.99/907.29
  6. Step 6: Final answer
    x = 709.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.