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Finding the Fourth Proportional to 372.63, 559.12 and 208.22

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Solution

The fourth proportional to 372.63, 559.12 and 208.22 is: 312.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.63 : 559.12 = 208.22 : x
  2. Step 2: Convert to fraction form
    372.63/559.12 = 208.22/x
  3. Step 3: Cross multiply
    372.63x = 559.12 × 208.22
  4. Step 4: Simplify right side
    372.63x = 116,419.97
  5. Step 5: Solve for x
    x = 116,419.97/372.63
  6. Step 6: Final answer
    x = 312.43

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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.