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Finding the Fourth Proportional to 375.68, 563.54 and 213

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Solution

The fourth proportional to 375.68, 563.54 and 213 is: 319.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.68 : 563.54 = 213 : x
  2. Step 2: Convert to fraction form
    375.68/563.54 = 213/x
  3. Step 3: Cross multiply
    375.68x = 563.54 × 213
  4. Step 4: Simplify right side
    375.68x = 120,034.02
  5. Step 5: Solve for x
    x = 120,034.02/375.68
  6. Step 6: Final answer
    x = 319.51

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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.