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Finding the Fourth Proportional to 325.03, 448.60 and 278.86

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Solution

The fourth proportional to 325.03, 448.60 and 278.86 is: 384.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.03 : 448.60 = 278.86 : x
  2. Step 2: Convert to fraction form
    325.03/448.60 = 278.86/x
  3. Step 3: Cross multiply
    325.03x = 448.60 × 278.86
  4. Step 4: Simplify right side
    325.03x = 125,096.60
  5. Step 5: Solve for x
    x = 125,096.60/325.03
  6. Step 6: Final answer
    x = 384.88

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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.