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Finding the Fourth Proportional to 255.71, 353.12 and 177.23

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Solution

The fourth proportional to 255.71, 353.12 and 177.23 is: 244.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.71 : 353.12 = 177.23 : x
  2. Step 2: Convert to fraction form
    255.71/353.12 = 177.23/x
  3. Step 3: Cross multiply
    255.71x = 353.12 × 177.23
  4. Step 4: Simplify right side
    255.71x = 62,583.45
  5. Step 5: Solve for x
    x = 62,583.45/255.71
  6. Step 6: Final answer
    x = 244.74

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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.