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Finding the Fourth Proportional to 271.53, 374.56 and 253.31

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Solution

The fourth proportional to 271.53, 374.56 and 253.31 is: 349.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.53 : 374.56 = 253.31 : x
  2. Step 2: Convert to fraction form
    271.53/374.56 = 253.31/x
  3. Step 3: Cross multiply
    271.53x = 374.56 × 253.31
  4. Step 4: Simplify right side
    271.53x = 94,876.65
  5. Step 5: Solve for x
    x = 94,876.65/271.53
  6. Step 6: Final answer
    x = 349.41

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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.