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Finding the Fourth Proportional to 451.36, 680.11 and 371.98

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Solution

The fourth proportional to 451.36, 680.11 and 371.98 is: 560.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.36 : 680.11 = 371.98 : x
  2. Step 2: Convert to fraction form
    451.36/680.11 = 371.98/x
  3. Step 3: Cross multiply
    451.36x = 680.11 × 371.98
  4. Step 4: Simplify right side
    451.36x = 252,987.32
  5. Step 5: Solve for x
    x = 252,987.32/451.36
  6. Step 6: Final answer
    x = 560.50

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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.