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Finding the Fourth Proportional to 268.50, 403.30 and 177.24

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Solution

The fourth proportional to 268.50, 403.30 and 177.24 is: 266.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.50 : 403.30 = 177.24 : x
  2. Step 2: Convert to fraction form
    268.50/403.30 = 177.24/x
  3. Step 3: Cross multiply
    268.50x = 403.30 × 177.24
  4. Step 4: Simplify right side
    268.50x = 71,480.89
  5. Step 5: Solve for x
    x = 71,480.89/268.50
  6. Step 6: Final answer
    x = 266.22

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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.