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Finding the Fourth Proportional to 450.72, 679.16 and 371.34

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Solution

The fourth proportional to 450.72, 679.16 and 371.34 is: 559.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.72 : 679.16 = 371.34 : x
  2. Step 2: Convert to fraction form
    450.72/679.16 = 371.34/x
  3. Step 3: Cross multiply
    450.72x = 679.16 × 371.34
  4. Step 4: Simplify right side
    450.72x = 252,197.42
  5. Step 5: Solve for x
    x = 252,197.42/450.72
  6. Step 6: Final answer
    x = 559.54

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.