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Finding the Fourth Proportional to 166.90, 230.26 and 145.02

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Solution

The fourth proportional to 166.90, 230.26 and 145.02 is: 200.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.90 : 230.26 = 145.02 : x
  2. Step 2: Convert to fraction form
    166.90/230.26 = 145.02/x
  3. Step 3: Cross multiply
    166.90x = 230.26 × 145.02
  4. Step 4: Simplify right side
    166.90x = 33,392.31
  5. Step 5: Solve for x
    x = 33,392.31/166.90
  6. Step 6: Final answer
    x = 200.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.