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Finding the Fourth Proportional to 451.86, 680.87 and 372.48

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Solution

The fourth proportional to 451.86, 680.87 and 372.48 is: 561.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.86 : 680.87 = 372.48 : x
  2. Step 2: Convert to fraction form
    451.86/680.87 = 372.48/x
  3. Step 3: Cross multiply
    451.86x = 680.87 × 372.48
  4. Step 4: Simplify right side
    451.86x = 253,608.60
  5. Step 5: Solve for x
    x = 253,608.60/451.86
  6. Step 6: Final answer
    x = 561.25

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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.