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Finding the Fourth Proportional to 451.81, 677.71 and 177.93

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Solution

The fourth proportional to 451.81, 677.71 and 177.93 is: 266.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.81 : 677.71 = 177.93 : x
  2. Step 2: Convert to fraction form
    451.81/677.71 = 177.93/x
  3. Step 3: Cross multiply
    451.81x = 677.71 × 177.93
  4. Step 4: Simplify right side
    451.81x = 120,581.55
  5. Step 5: Solve for x
    x = 120,581.55/451.81
  6. Step 6: Final answer
    x = 266.89

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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.