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Finding the Fourth Proportional to 908.62, 1,254.18 and 614.28

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Solution

The fourth proportional to 908.62, 1,254.18 and 614.28 is: 847.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    908.62 : 1,254.18 = 614.28 : x
  2. Step 2: Convert to fraction form
    908.62/1,254.18 = 614.28/x
  3. Step 3: Cross multiply
    908.62x = 1,254.18 × 614.28
  4. Step 4: Simplify right side
    908.62x = 770,424.70
  5. Step 5: Solve for x
    x = 770,424.70/908.62
  6. Step 6: Final answer
    x = 847.91

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