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Finding the Fourth Proportional to 974.32, 1,461.70 and 325.05

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Solution

The fourth proportional to 974.32, 1,461.70 and 325.05 is: 487.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.32 : 1,461.70 = 325.05 : x
  2. Step 2: Convert to fraction form
    974.32/1,461.70 = 325.05/x
  3. Step 3: Cross multiply
    974.32x = 1,461.70 × 325.05
  4. Step 4: Simplify right side
    974.32x = 475,125.59
  5. Step 5: Solve for x
    x = 475,125.59/974.32
  6. Step 6: Final answer
    x = 487.65

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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.