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Finding the Fourth Proportional to 712.18, 1,067.24 and 492.58

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Solution

The fourth proportional to 712.18, 1,067.24 and 492.58 is: 738.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    712.18 : 1,067.24 = 492.58 : x
  2. Step 2: Convert to fraction form
    712.18/1,067.24 = 492.58/x
  3. Step 3: Cross multiply
    712.18x = 1,067.24 × 492.58
  4. Step 4: Simplify right side
    712.18x = 525,701.08
  5. Step 5: Solve for x
    x = 525,701.08/712.18
  6. Step 6: Final answer
    x = 738.16

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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.