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Finding the Fourth Proportional to 451.23, 677.11 and 177.31

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Solution

The fourth proportional to 451.23, 677.11 and 177.31 is: 266.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.23 : 677.11 = 177.31 : x
  2. Step 2: Convert to fraction form
    451.23/677.11 = 177.31/x
  3. Step 3: Cross multiply
    451.23x = 677.11 × 177.31
  4. Step 4: Simplify right side
    451.23x = 120,058.37
  5. Step 5: Solve for x
    x = 120,058.37/451.23
  6. Step 6: Final answer
    x = 266.07

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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.