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Finding the Fourth Proportional to 937.91, 1,293.57 and 875.03

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Solution

The fourth proportional to 937.91, 1,293.57 and 875.03 is: 1,206.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.91 : 1,293.57 = 875.03 : x
  2. Step 2: Convert to fraction form
    937.91/1,293.57 = 875.03/x
  3. Step 3: Cross multiply
    937.91x = 1,293.57 × 875.03
  4. Step 4: Simplify right side
    937.91x = 1,131,909.32
  5. Step 5: Solve for x
    x = 1,131,909.32/937.91
  6. Step 6: Final answer
    x = 1,206.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.