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Finding the Fourth Proportional to 375.44, 561.84 and 324.72

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Solution

The fourth proportional to 375.44, 561.84 and 324.72 is: 485.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.44 : 561.84 = 324.72 : x
  2. Step 2: Convert to fraction form
    375.44/561.84 = 324.72/x
  3. Step 3: Cross multiply
    375.44x = 561.84 × 324.72
  4. Step 4: Simplify right side
    375.44x = 182,440.68
  5. Step 5: Solve for x
    x = 182,440.68/375.44
  6. Step 6: Final answer
    x = 485.94

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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.