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Finding the Fourth Proportional to 846.22, 1,167.92 and 492.15

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Solution

The fourth proportional to 846.22, 1,167.92 and 492.15 is: 679.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.22 : 1,167.92 = 492.15 : x
  2. Step 2: Convert to fraction form
    846.22/1,167.92 = 492.15/x
  3. Step 3: Cross multiply
    846.22x = 1,167.92 × 492.15
  4. Step 4: Simplify right side
    846.22x = 574,792.31
  5. Step 5: Solve for x
    x = 574,792.31/846.22
  6. Step 6: Final answer
    x = 679.25

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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.