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Finding the Fourth Proportional to 360.27, 496.59 and 312.88

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Solution

The fourth proportional to 360.27, 496.59 and 312.88 is: 431.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.27 : 496.59 = 312.88 : x
  2. Step 2: Convert to fraction form
    360.27/496.59 = 312.88/x
  3. Step 3: Cross multiply
    360.27x = 496.59 × 312.88
  4. Step 4: Simplify right side
    360.27x = 155,373.54
  5. Step 5: Solve for x
    x = 155,373.54/360.27
  6. Step 6: Final answer
    x = 431.27

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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.