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Finding the Fourth Proportional to 488.83, 733.24 and 142.12

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Solution

The fourth proportional to 488.83, 733.24 and 142.12 is: 213.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.83 : 733.24 = 142.12 : x
  2. Step 2: Convert to fraction form
    488.83/733.24 = 142.12/x
  3. Step 3: Cross multiply
    488.83x = 733.24 × 142.12
  4. Step 4: Simplify right side
    488.83x = 104,208.07
  5. Step 5: Solve for x
    x = 104,208.07/488.83
  6. Step 6: Final answer
    x = 213.18

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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.