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Finding the Fourth Proportional to 328.80, 453.88 and 266.48

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Solution

The fourth proportional to 328.80, 453.88 and 266.48 is: 367.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.80 : 453.88 = 266.48 : x
  2. Step 2: Convert to fraction form
    328.80/453.88 = 266.48/x
  3. Step 3: Cross multiply
    328.80x = 453.88 × 266.48
  4. Step 4: Simplify right side
    328.80x = 120,949.94
  5. Step 5: Solve for x
    x = 120,949.94/328.80
  6. Step 6: Final answer
    x = 367.85

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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.