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Finding the Fourth Proportional to 271.56, 374.70 and 219.72

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Solution

The fourth proportional to 271.56, 374.70 and 219.72 is: 303.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.56 : 374.70 = 219.72 : x
  2. Step 2: Convert to fraction form
    271.56/374.70 = 219.72/x
  3. Step 3: Cross multiply
    271.56x = 374.70 × 219.72
  4. Step 4: Simplify right side
    271.56x = 82,329.08
  5. Step 5: Solve for x
    x = 82,329.08/271.56
  6. Step 6: Final answer
    x = 303.17

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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.