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Finding the Fourth Proportional to 1,273.23, 1,909.91 and 532.91

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Solution

The fourth proportional to 1,273.23, 1,909.91 and 532.91 is: 799.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273.23 : 1,909.91 = 532.91 : x
  2. Step 2: Convert to fraction form
    1,273.23/1,909.91 = 532.91/x
  3. Step 3: Cross multiply
    1,273.23x = 1,909.91 × 532.91
  4. Step 4: Simplify right side
    1,273.23x = 1,017,810.14
  5. Step 5: Solve for x
    x = 1,017,810.14/1,273.23
  6. Step 6: Final answer
    x = 799.39

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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.