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Finding the Fourth Proportional to 308.12, 425.52 and 266.47

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Solution

The fourth proportional to 308.12, 425.52 and 266.47 is: 368.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.12 : 425.52 = 266.47 : x
  2. Step 2: Convert to fraction form
    308.12/425.52 = 266.47/x
  3. Step 3: Cross multiply
    308.12x = 425.52 × 266.47
  4. Step 4: Simplify right side
    308.12x = 113,387.25
  5. Step 5: Solve for x
    x = 113,387.25/308.12
  6. Step 6: Final answer
    x = 368.00

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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.