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Finding the Fourth Proportional to 937.13, 1,403.87 and 866.25

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Solution

The fourth proportional to 937.13, 1,403.87 and 866.25 is: 1,297.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.13 : 1,403.87 = 866.25 : x
  2. Step 2: Convert to fraction form
    937.13/1,403.87 = 866.25/x
  3. Step 3: Cross multiply
    937.13x = 1,403.87 × 866.25
  4. Step 4: Simplify right side
    937.13x = 1,216,098.06
  5. Step 5: Solve for x
    x = 1,216,098.06/937.13
  6. Step 6: Final answer
    x = 1,297.69

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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.