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Finding the Fourth Proportional to 442.17, 663.33 and 153.61

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Solution

The fourth proportional to 442.17, 663.33 and 153.61 is: 230.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.17 : 663.33 = 153.61 : x
  2. Step 2: Convert to fraction form
    442.17/663.33 = 153.61/x
  3. Step 3: Cross multiply
    442.17x = 663.33 × 153.61
  4. Step 4: Simplify right side
    442.17x = 101,894.12
  5. Step 5: Solve for x
    x = 101,894.12/442.17
  6. Step 6: Final answer
    x = 230.44

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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.