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Finding the Fourth Proportional to 445.52, 668.24 and 156.94

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Solution

The fourth proportional to 445.52, 668.24 and 156.94 is: 235.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.52 : 668.24 = 156.94 : x
  2. Step 2: Convert to fraction form
    445.52/668.24 = 156.94/x
  3. Step 3: Cross multiply
    445.52x = 668.24 × 156.94
  4. Step 4: Simplify right side
    445.52x = 104,871.72
  5. Step 5: Solve for x
    x = 104,871.72/445.52
  6. Step 6: Final answer
    x = 235.39

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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.