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Finding the Fourth Proportional to 328.96, 454.08 and 191.04

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Solution

The fourth proportional to 328.96, 454.08 and 191.04 is: 263.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.96 : 454.08 = 191.04 : x
  2. Step 2: Convert to fraction form
    328.96/454.08 = 191.04/x
  3. Step 3: Cross multiply
    328.96x = 454.08 × 191.04
  4. Step 4: Simplify right side
    328.96x = 86,747.44
  5. Step 5: Solve for x
    x = 86,747.44/328.96
  6. Step 6: Final answer
    x = 263.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.