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Finding the Fourth Proportional to 308.95, 464.01 and 265.12

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Solution

The fourth proportional to 308.95, 464.01 and 265.12 is: 398.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.95 : 464.01 = 265.12 : x
  2. Step 2: Convert to fraction form
    308.95/464.01 = 265.12/x
  3. Step 3: Cross multiply
    308.95x = 464.01 × 265.12
  4. Step 4: Simplify right side
    308.95x = 123,018.33
  5. Step 5: Solve for x
    x = 123,018.33/308.95
  6. Step 6: Final answer
    x = 398.18

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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.