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Finding the Fourth Proportional to 325.15, 487.06 and 308.11

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Solution

The fourth proportional to 325.15, 487.06 and 308.11 is: 461.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.15 : 487.06 = 308.11 : x
  2. Step 2: Convert to fraction form
    325.15/487.06 = 308.11/x
  3. Step 3: Cross multiply
    325.15x = 487.06 × 308.11
  4. Step 4: Simplify right side
    325.15x = 150,066.07
  5. Step 5: Solve for x
    x = 150,066.07/325.15
  6. Step 6: Final answer
    x = 461.53

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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.