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Finding the Fourth Proportional to 451.55, 676.92 and 177.77

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Solution

The fourth proportional to 451.55, 676.92 and 177.77 is: 266.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.55 : 676.92 = 177.77 : x
  2. Step 2: Convert to fraction form
    451.55/676.92 = 177.77/x
  3. Step 3: Cross multiply
    451.55x = 676.92 × 177.77
  4. Step 4: Simplify right side
    451.55x = 120,336.07
  5. Step 5: Solve for x
    x = 120,336.07/451.55
  6. Step 6: Final answer
    x = 266.50

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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.