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Finding the Fourth Proportional to 326.12, 488.37 and 188.83

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Solution

The fourth proportional to 326.12, 488.37 and 188.83 is: 282.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.12 : 488.37 = 188.83 : x
  2. Step 2: Convert to fraction form
    326.12/488.37 = 188.83/x
  3. Step 3: Cross multiply
    326.12x = 488.37 × 188.83
  4. Step 4: Simplify right side
    326.12x = 92,216.47
  5. Step 5: Solve for x
    x = 92,216.47/326.12
  6. Step 6: Final answer
    x = 282.77

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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.