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Finding the Fourth Proportional to 308.00, 424.65 and 197.29

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Solution

The fourth proportional to 308.00, 424.65 and 197.29 is: 272.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.00 : 424.65 = 197.29 : x
  2. Step 2: Convert to fraction form
    308.00/424.65 = 197.29/x
  3. Step 3: Cross multiply
    308.00x = 424.65 × 197.29
  4. Step 4: Simplify right side
    308.00x = 83,780.47
  5. Step 5: Solve for x
    x = 83,780.47/308.00
  6. Step 6: Final answer
    x = 272.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.