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Finding the Fourth Proportional to 434.50, 650.13 and 271.42

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Solution

The fourth proportional to 434.50, 650.13 and 271.42 is: 406.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.50 : 650.13 = 271.42 : x
  2. Step 2: Convert to fraction form
    434.50/650.13 = 271.42/x
  3. Step 3: Cross multiply
    434.50x = 650.13 × 271.42
  4. Step 4: Simplify right side
    434.50x = 176,458.28
  5. Step 5: Solve for x
    x = 176,458.28/434.50
  6. Step 6: Final answer
    x = 406.12

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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.