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Finding the Fourth Proportional to 845.61, 1,167.17 and 496.41

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Solution

The fourth proportional to 845.61, 1,167.17 and 496.41 is: 685.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.61 : 1,167.17 = 496.41 : x
  2. Step 2: Convert to fraction form
    845.61/1,167.17 = 496.41/x
  3. Step 3: Cross multiply
    845.61x = 1,167.17 × 496.41
  4. Step 4: Simplify right side
    845.61x = 579,394.86
  5. Step 5: Solve for x
    x = 579,394.86/845.61
  6. Step 6: Final answer
    x = 685.18

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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.