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Finding the Fourth Proportional to 974.02, 1,344.18 and 554.41

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Solution

The fourth proportional to 974.02, 1,344.18 and 554.41 is: 765.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.02 : 1,344.18 = 554.41 : x
  2. Step 2: Convert to fraction form
    974.02/1,344.18 = 554.41/x
  3. Step 3: Cross multiply
    974.02x = 1,344.18 × 554.41
  4. Step 4: Simplify right side
    974.02x = 745,226.83
  5. Step 5: Solve for x
    x = 745,226.83/974.02
  6. Step 6: Final answer
    x = 765.10

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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.