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Finding the Fourth Proportional to 637.32, 879.48 and 361.32

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Solution

The fourth proportional to 637.32, 879.48 and 361.32 is: 498.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.32 : 879.48 = 361.32 : x
  2. Step 2: Convert to fraction form
    637.32/879.48 = 361.32/x
  3. Step 3: Cross multiply
    637.32x = 879.48 × 361.32
  4. Step 4: Simplify right side
    637.32x = 317,773.71
  5. Step 5: Solve for x
    x = 317,773.71/637.32
  6. Step 6: Final answer
    x = 498.61

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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.