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Finding the Fourth Proportional to 974.03, 1,461.96 and 512.15

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Solution

The fourth proportional to 974.03, 1,461.96 and 512.15 is: 768.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.03 : 1,461.96 = 512.15 : x
  2. Step 2: Convert to fraction form
    974.03/1,461.96 = 512.15/x
  3. Step 3: Cross multiply
    974.03x = 1,461.96 × 512.15
  4. Step 4: Simplify right side
    974.03x = 748,735.50
  5. Step 5: Solve for x
    x = 748,735.50/974.03
  6. Step 6: Final answer
    x = 768.70

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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.