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Finding the Fourth Proportional to 340.67, 512.30 and 271.41

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Solution

The fourth proportional to 340.67, 512.30 and 271.41 is: 408.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.67 : 512.30 = 271.41 : x
  2. Step 2: Convert to fraction form
    340.67/512.30 = 271.41/x
  3. Step 3: Cross multiply
    340.67x = 512.30 × 271.41
  4. Step 4: Simplify right side
    340.67x = 139,044.02
  5. Step 5: Solve for x
    x = 139,044.02/340.67
  6. Step 6: Final answer
    x = 408.15

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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.