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Finding the Fourth Proportional to 944.88, 1,301.04 and 839.80

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Solution

The fourth proportional to 944.88, 1,301.04 and 839.80 is: 1,156.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.88 : 1,301.04 = 839.80 : x
  2. Step 2: Convert to fraction form
    944.88/1,301.04 = 839.80/x
  3. Step 3: Cross multiply
    944.88x = 1,301.04 × 839.80
  4. Step 4: Simplify right side
    944.88x = 1,092,613.39
  5. Step 5: Solve for x
    x = 1,092,613.39/944.88
  6. Step 6: Final answer
    x = 1,156.35

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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.