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Finding the Fourth Proportional to 349.18, 523.28 and 271.79

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Solution

The fourth proportional to 349.18, 523.28 and 271.79 is: 407.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.18 : 523.28 = 271.79 : x
  2. Step 2: Convert to fraction form
    349.18/523.28 = 271.79/x
  3. Step 3: Cross multiply
    349.18x = 523.28 × 271.79
  4. Step 4: Simplify right side
    349.18x = 142,220.77
  5. Step 5: Solve for x
    x = 142,220.77/349.18
  6. Step 6: Final answer
    x = 407.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.