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Finding the Fourth Proportional to 454.89, 681.18 and 269.33

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Solution

The fourth proportional to 454.89, 681.18 and 269.33 is: 403.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.89 : 681.18 = 269.33 : x
  2. Step 2: Convert to fraction form
    454.89/681.18 = 269.33/x
  3. Step 3: Cross multiply
    454.89x = 681.18 × 269.33
  4. Step 4: Simplify right side
    454.89x = 183,462.21
  5. Step 5: Solve for x
    x = 183,462.21/454.89
  6. Step 6: Final answer
    x = 403.31

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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.