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Finding the Fourth Proportional to 974.04, 1,461.26 and 324.78

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Solution

The fourth proportional to 974.04, 1,461.26 and 324.78 is: 487.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.04 : 1,461.26 = 324.78 : x
  2. Step 2: Convert to fraction form
    974.04/1,461.26 = 324.78/x
  3. Step 3: Cross multiply
    974.04x = 1,461.26 × 324.78
  4. Step 4: Simplify right side
    974.04x = 474,588.02
  5. Step 5: Solve for x
    x = 474,588.02/974.04
  6. Step 6: Final answer
    x = 487.24

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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.