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Finding the Fourth Proportional to 846.51, 1,167.80 and 496.95

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Solution

The fourth proportional to 846.51, 1,167.80 and 496.95 is: 685.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.51 : 1,167.80 = 496.95 : x
  2. Step 2: Convert to fraction form
    846.51/1,167.80 = 496.95/x
  3. Step 3: Cross multiply
    846.51x = 1,167.80 × 496.95
  4. Step 4: Simplify right side
    846.51x = 580,335.73
  5. Step 5: Solve for x
    x = 580,335.73/846.51
  6. Step 6: Final answer
    x = 685.56

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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.