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Finding the Fourth Proportional to 325, 448.30 and 298.86

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Solution

The fourth proportional to 325, 448.30 and 298.86 is: 412.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    325 : 448.30 = 298.86 : x
  2. Step 2: Convert to fraction form
    325/448.30 = 298.86/x
  3. Step 3: Cross multiply
    325x = 448.30 × 298.86
  4. Step 4: Simplify right side
    325x = 133,978.94
  5. Step 5: Solve for x
    x = 133,978.94/325
  6. Step 6: Final answer
    x = 412.24

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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.