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Finding the Fourth Proportional to 445.47, 668.26 and 153.03

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Solution

The fourth proportional to 445.47, 668.26 and 153.03 is: 229.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.47 : 668.26 = 153.03 : x
  2. Step 2: Convert to fraction form
    445.47/668.26 = 153.03/x
  3. Step 3: Cross multiply
    445.47x = 668.26 × 153.03
  4. Step 4: Simplify right side
    445.47x = 102,263.83
  5. Step 5: Solve for x
    x = 102,263.83/445.47
  6. Step 6: Final answer
    x = 229.56

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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.