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Finding the Fourth Proportional to 1,273.58, 1,909.97 and 493.52

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Solution

The fourth proportional to 1,273.58, 1,909.97 and 493.52 is: 740.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273.58 : 1,909.97 = 493.52 : x
  2. Step 2: Convert to fraction form
    1,273.58/1,909.97 = 493.52/x
  3. Step 3: Cross multiply
    1,273.58x = 1,909.97 × 493.52
  4. Step 4: Simplify right side
    1,273.58x = 942,613.09
  5. Step 5: Solve for x
    x = 942,613.09/1,273.58
  6. Step 6: Final answer
    x = 740.13

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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.