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Finding the Fourth Proportional to 451.85, 680.87 and 372.47

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Solution

The fourth proportional to 451.85, 680.87 and 372.47 is: 561.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.85 : 680.87 = 372.47 : x
  2. Step 2: Convert to fraction form
    451.85/680.87 = 372.47/x
  3. Step 3: Cross multiply
    451.85x = 680.87 × 372.47
  4. Step 4: Simplify right side
    451.85x = 253,601.18
  5. Step 5: Solve for x
    x = 253,601.18/451.85
  6. Step 6: Final answer
    x = 561.26

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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.