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Finding the Fourth Proportional to 200.12, 275.76 and 141.80

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Solution

The fourth proportional to 200.12, 275.76 and 141.80 is: 195.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.12 : 275.76 = 141.80 : x
  2. Step 2: Convert to fraction form
    200.12/275.76 = 141.80/x
  3. Step 3: Cross multiply
    200.12x = 275.76 × 141.80
  4. Step 4: Simplify right side
    200.12x = 39,102.77
  5. Step 5: Solve for x
    x = 39,102.77/200.12
  6. Step 6: Final answer
    x = 195.40

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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.