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Finding the Fourth Proportional to 272.79, 406.10 and 271.17

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Solution

The fourth proportional to 272.79, 406.10 and 271.17 is: 403.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.79 : 406.10 = 271.17 : x
  2. Step 2: Convert to fraction form
    272.79/406.10 = 271.17/x
  3. Step 3: Cross multiply
    272.79x = 406.10 × 271.17
  4. Step 4: Simplify right side
    272.79x = 110,119.07
  5. Step 5: Solve for x
    x = 110,119.07/272.79
  6. Step 6: Final answer
    x = 403.68

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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.