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Finding the Fourth Proportional to 375.03, 561.78 and 298.11

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Solution

The fourth proportional to 375.03, 561.78 and 298.11 is: 446.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.03 : 561.78 = 298.11 : x
  2. Step 2: Convert to fraction form
    375.03/561.78 = 298.11/x
  3. Step 3: Cross multiply
    375.03x = 561.78 × 298.11
  4. Step 4: Simplify right side
    375.03x = 167,472.24
  5. Step 5: Solve for x
    x = 167,472.24/375.03
  6. Step 6: Final answer
    x = 446.56

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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.