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Finding the Fourth Proportional to 488.30, 732.48 and 163.66

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Solution

The fourth proportional to 488.30, 732.48 and 163.66 is: 245.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.30 : 732.48 = 163.66 : x
  2. Step 2: Convert to fraction form
    488.30/732.48 = 163.66/x
  3. Step 3: Cross multiply
    488.30x = 732.48 × 163.66
  4. Step 4: Simplify right side
    488.30x = 119,877.68
  5. Step 5: Solve for x
    x = 119,877.68/488.30
  6. Step 6: Final answer
    x = 245.50

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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.