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Finding the Fourth Proportional to 1,103.52, 1,655.74 and 372.70

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Solution

The fourth proportional to 1,103.52, 1,655.74 and 372.70 is: 559.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103.52 : 1,655.74 = 372.70 : x
  2. Step 2: Convert to fraction form
    1,103.52/1,655.74 = 372.70/x
  3. Step 3: Cross multiply
    1,103.52x = 1,655.74 × 372.70
  4. Step 4: Simplify right side
    1,103.52x = 617,096.83
  5. Step 5: Solve for x
    x = 617,096.83/1,103.52
  6. Step 6: Final answer
    x = 559.21

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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.