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Finding the Fourth Proportional to 145.26, 199.40 and 132.30

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Solution

The fourth proportional to 145.26, 199.40 and 132.30 is: 181.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.26 : 199.40 = 132.30 : x
  2. Step 2: Convert to fraction form
    145.26/199.40 = 132.30/x
  3. Step 3: Cross multiply
    145.26x = 199.40 × 132.30
  4. Step 4: Simplify right side
    145.26x = 26,379.96
  5. Step 5: Solve for x
    x = 26,379.96/145.26
  6. Step 6: Final answer
    x = 181.61

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.