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Finding the Fourth Proportional to 360.64, 497.71 and 255.85

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Solution

The fourth proportional to 360.64, 497.71 and 255.85 is: 353.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.64 : 497.71 = 255.85 : x
  2. Step 2: Convert to fraction form
    360.64/497.71 = 255.85/x
  3. Step 3: Cross multiply
    360.64x = 497.71 × 255.85
  4. Step 4: Simplify right side
    360.64x = 127,339.10
  5. Step 5: Solve for x
    x = 127,339.10/360.64
  6. Step 6: Final answer
    x = 353.09

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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.