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Finding the Fourth Proportional to 301.17, 451.56 and 147.17

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Solution

The fourth proportional to 301.17, 451.56 and 147.17 is: 220.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.17 : 451.56 = 147.17 : x
  2. Step 2: Convert to fraction form
    301.17/451.56 = 147.17/x
  3. Step 3: Cross multiply
    301.17x = 451.56 × 147.17
  4. Step 4: Simplify right side
    301.17x = 66,456.09
  5. Step 5: Solve for x
    x = 66,456.09/301.17
  6. Step 6: Final answer
    x = 220.66

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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.