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Finding the Fourth Proportional to 372.07, 512.89 and 322.39

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Solution

The fourth proportional to 372.07, 512.89 and 322.39 is: 444.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.07 : 512.89 = 322.39 : x
  2. Step 2: Convert to fraction form
    372.07/512.89 = 322.39/x
  3. Step 3: Cross multiply
    372.07x = 512.89 × 322.39
  4. Step 4: Simplify right side
    372.07x = 165,350.61
  5. Step 5: Solve for x
    x = 165,350.61/372.07
  6. Step 6: Final answer
    x = 444.41

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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.