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Finding the Fourth Proportional to 145.62, 199.34 and 140.97

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Solution

The fourth proportional to 145.62, 199.34 and 140.97 is: 192.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.62 : 199.34 = 140.97 : x
  2. Step 2: Convert to fraction form
    145.62/199.34 = 140.97/x
  3. Step 3: Cross multiply
    145.62x = 199.34 × 140.97
  4. Step 4: Simplify right side
    145.62x = 28,100.96
  5. Step 5: Solve for x
    x = 28,100.96/145.62
  6. Step 6: Final answer
    x = 192.97

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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.