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Finding the Fourth Proportional to 1,436.59, 2,154.88 and 614.32

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Solution

The fourth proportional to 1,436.59, 2,154.88 and 614.32 is: 921.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436.59 : 2,154.88 = 614.32 : x
  2. Step 2: Convert to fraction form
    1,436.59/2,154.88 = 614.32/x
  3. Step 3: Cross multiply
    1,436.59x = 2,154.88 × 614.32
  4. Step 4: Simplify right side
    1,436.59x = 1,323,795.44
  5. Step 5: Solve for x
    x = 1,323,795.44/1,436.59
  6. Step 6: Final answer
    x = 921.49

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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.