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Finding the Fourth Proportional to 1,493.55, 2,240.04 and 397.92

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Solution

The fourth proportional to 1,493.55, 2,240.04 and 397.92 is: 596.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,493.55 : 2,240.04 = 397.92 : x
  2. Step 2: Convert to fraction form
    1,493.55/2,240.04 = 397.92/x
  3. Step 3: Cross multiply
    1,493.55x = 2,240.04 × 397.92
  4. Step 4: Simplify right side
    1,493.55x = 891,356.72
  5. Step 5: Solve for x
    x = 891,356.72/1,493.55
  6. Step 6: Final answer
    x = 596.80

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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.