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Finding the Fourth Proportional to 271.85, 374.99 and 172.23

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Solution

The fourth proportional to 271.85, 374.99 and 172.23 is: 237.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.85 : 374.99 = 172.23 : x
  2. Step 2: Convert to fraction form
    271.85/374.99 = 172.23/x
  3. Step 3: Cross multiply
    271.85x = 374.99 × 172.23
  4. Step 4: Simplify right side
    271.85x = 64,585.47
  5. Step 5: Solve for x
    x = 64,585.47/271.85
  6. Step 6: Final answer
    x = 237.58

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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.