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Finding the Fourth Proportional to 837.07, 1,255.61 and 654.59

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Solution

The fourth proportional to 837.07, 1,255.61 and 654.59 is: 981.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.07 : 1,255.61 = 654.59 : x
  2. Step 2: Convert to fraction form
    837.07/1,255.61 = 654.59/x
  3. Step 3: Cross multiply
    837.07x = 1,255.61 × 654.59
  4. Step 4: Simplify right side
    837.07x = 821,909.75
  5. Step 5: Solve for x
    x = 821,909.75/837.07
  6. Step 6: Final answer
    x = 981.89

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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.