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Finding the Fourth Proportional to 301.80, 452.76 and 109.42

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Solution

The fourth proportional to 301.80, 452.76 and 109.42 is: 164.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.80 : 452.76 = 109.42 : x
  2. Step 2: Convert to fraction form
    301.80/452.76 = 109.42/x
  3. Step 3: Cross multiply
    301.80x = 452.76 × 109.42
  4. Step 4: Simplify right side
    301.80x = 49,541.00
  5. Step 5: Solve for x
    x = 49,541.00/301.80
  6. Step 6: Final answer
    x = 164.15

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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.