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Finding the Fourth Proportional to 488.78, 732.66 and 180.44

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Solution

The fourth proportional to 488.78, 732.66 and 180.44 is: 270.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.78 : 732.66 = 180.44 : x
  2. Step 2: Convert to fraction form
    488.78/732.66 = 180.44/x
  3. Step 3: Cross multiply
    488.78x = 732.66 × 180.44
  4. Step 4: Simplify right side
    488.78x = 132,197.77
  5. Step 5: Solve for x
    x = 132,197.77/488.78
  6. Step 6: Final answer
    x = 270.46

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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.