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Finding the Fourth Proportional to 301.80, 452.56 and 109.40

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Solution

The fourth proportional to 301.80, 452.56 and 109.40 is: 164.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.80 : 452.56 = 109.40 : x
  2. Step 2: Convert to fraction form
    301.80/452.56 = 109.40/x
  3. Step 3: Cross multiply
    301.80x = 452.56 × 109.40
  4. Step 4: Simplify right side
    301.80x = 49,510.06
  5. Step 5: Solve for x
    x = 49,510.06/301.80
  6. Step 6: Final answer
    x = 164.05

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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.