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Finding the Fourth Proportional to 145.73, 199.75 and 143.71

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Solution

The fourth proportional to 145.73, 199.75 and 143.71 is: 196.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.73 : 199.75 = 143.71 : x
  2. Step 2: Convert to fraction form
    145.73/199.75 = 143.71/x
  3. Step 3: Cross multiply
    145.73x = 199.75 × 143.71
  4. Step 4: Simplify right side
    145.73x = 28,706.07
  5. Step 5: Solve for x
    x = 28,706.07/145.73
  6. Step 6: Final answer
    x = 196.98

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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.