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Finding the Fourth Proportional to 974.26, 1,344.38 and 554.62

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Solution

The fourth proportional to 974.26, 1,344.38 and 554.62 is: 765.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.26 : 1,344.38 = 554.62 : x
  2. Step 2: Convert to fraction form
    974.26/1,344.38 = 554.62/x
  3. Step 3: Cross multiply
    974.26x = 1,344.38 × 554.62
  4. Step 4: Simplify right side
    974.26x = 745,620.04
  5. Step 5: Solve for x
    x = 745,620.04/974.26
  6. Step 6: Final answer
    x = 765.32

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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.