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Finding the Fourth Proportional to 1,601.90, 2,403.59 and 614.39

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Solution

The fourth proportional to 1,601.90, 2,403.59 and 614.39 is: 921.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,601.90 : 2,403.59 = 614.39 : x
  2. Step 2: Convert to fraction form
    1,601.90/2,403.59 = 614.39/x
  3. Step 3: Cross multiply
    1,601.90x = 2,403.59 × 614.39
  4. Step 4: Simplify right side
    1,601.90x = 1,476,731.18
  5. Step 5: Solve for x
    x = 1,476,731.18/1,601.90
  6. Step 6: Final answer
    x = 921.86

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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.