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Finding the Fourth Proportional to 442.05, 663.03 and 153.48

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Solution

The fourth proportional to 442.05, 663.03 and 153.48 is: 230.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.05 : 663.03 = 153.48 : x
  2. Step 2: Convert to fraction form
    442.05/663.03 = 153.48/x
  3. Step 3: Cross multiply
    442.05x = 663.03 × 153.48
  4. Step 4: Simplify right side
    442.05x = 101,761.84
  5. Step 5: Solve for x
    x = 101,761.84/442.05
  6. Step 6: Final answer
    x = 230.20

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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.