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Finding the Fourth Proportional to 974.28, 1,460.95 and 454.16

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Solution

The fourth proportional to 974.28, 1,460.95 and 454.16 is: 681.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.28 : 1,460.95 = 454.16 : x
  2. Step 2: Convert to fraction form
    974.28/1,460.95 = 454.16/x
  3. Step 3: Cross multiply
    974.28x = 1,460.95 × 454.16
  4. Step 4: Simplify right side
    974.28x = 663,507.57
  5. Step 5: Solve for x
    x = 663,507.57/974.28
  6. Step 6: Final answer
    x = 681.02

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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.