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Finding the Fourth Proportional to 974.10, 1,461.15 and 324.83

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Solution

The fourth proportional to 974.10, 1,461.15 and 324.83 is: 487.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.10 : 1,461.15 = 324.83 : x
  2. Step 2: Convert to fraction form
    974.10/1,461.15 = 324.83/x
  3. Step 3: Cross multiply
    974.10x = 1,461.15 × 324.83
  4. Step 4: Simplify right side
    974.10x = 474,627.79
  5. Step 5: Solve for x
    x = 474,627.79/974.10
  6. Step 6: Final answer
    x = 487.25

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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.