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Finding the Fourth Proportional to 387.27, 580.77 and 233.06

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Solution

The fourth proportional to 387.27, 580.77 and 233.06 is: 349.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    387.27 : 580.77 = 233.06 : x
  2. Step 2: Convert to fraction form
    387.27/580.77 = 233.06/x
  3. Step 3: Cross multiply
    387.27x = 580.77 × 233.06
  4. Step 4: Simplify right side
    387.27x = 135,351.35
  5. Step 5: Solve for x
    x = 135,351.35/387.27
  6. Step 6: Final answer
    x = 349.50

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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.