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Finding the Fourth Proportional to 980.16, 1,469.28 and 467.04

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Solution

The fourth proportional to 980.16, 1,469.28 and 467.04 is: 700.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    980.16 : 1,469.28 = 467.04 : x
  2. Step 2: Convert to fraction form
    980.16/1,469.28 = 467.04/x
  3. Step 3: Cross multiply
    980.16x = 1,469.28 × 467.04
  4. Step 4: Simplify right side
    980.16x = 686,212.53
  5. Step 5: Solve for x
    x = 686,212.53/980.16
  6. Step 6: Final answer
    x = 700.10

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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.