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Finding the Fourth Proportional to 974.20, 1,461.46 and 358.12

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Solution

The fourth proportional to 974.20, 1,461.46 and 358.12 is: 537.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.20 : 1,461.46 = 358.12 : x
  2. Step 2: Convert to fraction form
    974.20/1,461.46 = 358.12/x
  3. Step 3: Cross multiply
    974.20x = 1,461.46 × 358.12
  4. Step 4: Simplify right side
    974.20x = 523,378.06
  5. Step 5: Solve for x
    x = 523,378.06/974.20
  6. Step 6: Final answer
    x = 537.24

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Double scale
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1.5x scale

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.