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Finding the Fourth Proportional to 445.82, 668.48 and 153.18

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Solution

The fourth proportional to 445.82, 668.48 and 153.18 is: 229.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.82 : 668.48 = 153.18 : x
  2. Step 2: Convert to fraction form
    445.82/668.48 = 153.18/x
  3. Step 3: Cross multiply
    445.82x = 668.48 × 153.18
  4. Step 4: Simplify right side
    445.82x = 102,397.00
  5. Step 5: Solve for x
    x = 102,397.00/445.82
  6. Step 6: Final answer
    x = 229.68

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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.