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Finding the Fourth Proportional to 372.70, 559.66 and 291.30

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Solution

The fourth proportional to 372.70, 559.66 and 291.30 is: 437.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.70 : 559.66 = 291.30 : x
  2. Step 2: Convert to fraction form
    372.70/559.66 = 291.30/x
  3. Step 3: Cross multiply
    372.70x = 559.66 × 291.30
  4. Step 4: Simplify right side
    372.70x = 163,028.96
  5. Step 5: Solve for x
    x = 163,028.96/372.70
  6. Step 6: Final answer
    x = 437.43

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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.