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Finding the Fourth Proportional to 375.29, 563.16 and 221.53

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Solution

The fourth proportional to 375.29, 563.16 and 221.53 is: 332.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.29 : 563.16 = 221.53 : x
  2. Step 2: Convert to fraction form
    375.29/563.16 = 221.53/x
  3. Step 3: Cross multiply
    375.29x = 563.16 × 221.53
  4. Step 4: Simplify right side
    375.29x = 124,756.83
  5. Step 5: Solve for x
    x = 124,756.83/375.29
  6. Step 6: Final answer
    x = 332.43

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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.