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Finding the Fourth Proportional to 372.11, 555.24 and 328.37

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Solution

The fourth proportional to 372.11, 555.24 and 328.37 is: 489.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.11 : 555.24 = 328.37 : x
  2. Step 2: Convert to fraction form
    372.11/555.24 = 328.37/x
  3. Step 3: Cross multiply
    372.11x = 555.24 × 328.37
  4. Step 4: Simplify right side
    372.11x = 182,322.52
  5. Step 5: Solve for x
    x = 182,322.52/372.11
  6. Step 6: Final answer
    x = 489.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.