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Finding the Fourth Proportional to 974.39, 1,460.90 and 487.10

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Solution

The fourth proportional to 974.39, 1,460.90 and 487.10 is: 730.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.39 : 1,460.90 = 487.10 : x
  2. Step 2: Convert to fraction form
    974.39/1,460.90 = 487.10/x
  3. Step 3: Cross multiply
    974.39x = 1,460.90 × 487.10
  4. Step 4: Simplify right side
    974.39x = 711,604.39
  5. Step 5: Solve for x
    x = 711,604.39/974.39
  6. Step 6: Final answer
    x = 730.31

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.