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Finding the Fourth Proportional to 301.48, 452.30 and 85.06

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Solution

The fourth proportional to 301.48, 452.30 and 85.06 is: 127.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.48 : 452.30 = 85.06 : x
  2. Step 2: Convert to fraction form
    301.48/452.30 = 85.06/x
  3. Step 3: Cross multiply
    301.48x = 452.30 × 85.06
  4. Step 4: Simplify right side
    301.48x = 38,472.64
  5. Step 5: Solve for x
    x = 38,472.64/301.48
  6. Step 6: Final answer
    x = 127.61

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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.