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Finding the Fourth Proportional to 355.01, 532.46 and 123.89

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Solution

The fourth proportional to 355.01, 532.46 and 123.89 is: 185.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.01 : 532.46 = 123.89 : x
  2. Step 2: Convert to fraction form
    355.01/532.46 = 123.89/x
  3. Step 3: Cross multiply
    355.01x = 532.46 × 123.89
  4. Step 4: Simplify right side
    355.01x = 65,963.19
  5. Step 5: Solve for x
    x = 65,963.19/355.01
  6. Step 6: Final answer
    x = 185.81

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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.