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Finding the Fourth Proportional to 326.03, 449.98 and 279.86

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Solution

The fourth proportional to 326.03, 449.98 and 279.86 is: 386.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.03 : 449.98 = 279.86 : x
  2. Step 2: Convert to fraction form
    326.03/449.98 = 279.86/x
  3. Step 3: Cross multiply
    326.03x = 449.98 × 279.86
  4. Step 4: Simplify right side
    326.03x = 125,931.40
  5. Step 5: Solve for x
    x = 125,931.40/326.03
  6. Step 6: Final answer
    x = 386.26

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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.