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Finding the Fourth Proportional to 372.11, 555.67 and 325.49

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Solution

The fourth proportional to 372.11, 555.67 and 325.49 is: 486.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.11 : 555.67 = 325.49 : x
  2. Step 2: Convert to fraction form
    372.11/555.67 = 325.49/x
  3. Step 3: Cross multiply
    372.11x = 555.67 × 325.49
  4. Step 4: Simplify right side
    372.11x = 180,865.03
  5. Step 5: Solve for x
    x = 180,865.03/372.11
  6. Step 6: Final answer
    x = 486.05

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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.