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Finding the Fourth Proportional to 372.32, 557.36 and 318.32

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Solution

The fourth proportional to 372.32, 557.36 and 318.32 is: 476.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.32 : 557.36 = 318.32 : x
  2. Step 2: Convert to fraction form
    372.32/557.36 = 318.32/x
  3. Step 3: Cross multiply
    372.32x = 557.36 × 318.32
  4. Step 4: Simplify right side
    372.32x = 177,418.84
  5. Step 5: Solve for x
    x = 177,418.84/372.32
  6. Step 6: Final answer
    x = 476.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.