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Finding the Fourth Proportional to 360.72, 497.52 and 255.96

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Solution

The fourth proportional to 360.72, 497.52 and 255.96 is: 353.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.72 : 497.52 = 255.96 : x
  2. Step 2: Convert to fraction form
    360.72/497.52 = 255.96/x
  3. Step 3: Cross multiply
    360.72x = 497.52 × 255.96
  4. Step 4: Simplify right side
    360.72x = 127,345.22
  5. Step 5: Solve for x
    x = 127,345.22/360.72
  6. Step 6: Final answer
    x = 353.03

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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.