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Finding the Fourth Proportional to 275.86, 410.72 and 272.04

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Solution

The fourth proportional to 275.86, 410.72 and 272.04 is: 405.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.86 : 410.72 = 272.04 : x
  2. Step 2: Convert to fraction form
    275.86/410.72 = 272.04/x
  3. Step 3: Cross multiply
    275.86x = 410.72 × 272.04
  4. Step 4: Simplify right side
    275.86x = 111,732.27
  5. Step 5: Solve for x
    x = 111,732.27/275.86
  6. Step 6: Final answer
    x = 405.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.