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Finding the Fourth Proportional to 268.52, 403.04 and 191.80

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Solution

The fourth proportional to 268.52, 403.04 and 191.80 is: 287.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.52 : 403.04 = 191.80 : x
  2. Step 2: Convert to fraction form
    268.52/403.04 = 191.80/x
  3. Step 3: Cross multiply
    268.52x = 403.04 × 191.80
  4. Step 4: Simplify right side
    268.52x = 77,303.07
  5. Step 5: Solve for x
    x = 77,303.07/268.52
  6. Step 6: Final answer
    x = 287.89

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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.