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Finding the Fourth Proportional to 271.17, 374.76 and 247.95

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Solution

The fourth proportional to 271.17, 374.76 and 247.95 is: 342.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.17 : 374.76 = 247.95 : x
  2. Step 2: Convert to fraction form
    271.17/374.76 = 247.95/x
  3. Step 3: Cross multiply
    271.17x = 374.76 × 247.95
  4. Step 4: Simplify right side
    271.17x = 92,921.74
  5. Step 5: Solve for x
    x = 92,921.74/271.17
  6. Step 6: Final answer
    x = 342.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.