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Finding the Fourth Proportional to 200.86, 276.98 and 141.74

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Solution

The fourth proportional to 200.86, 276.98 and 141.74 is: 195.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.86 : 276.98 = 141.74 : x
  2. Step 2: Convert to fraction form
    200.86/276.98 = 141.74/x
  3. Step 3: Cross multiply
    200.86x = 276.98 × 141.74
  4. Step 4: Simplify right side
    200.86x = 39,259.15
  5. Step 5: Solve for x
    x = 39,259.15/200.86
  6. Step 6: Final answer
    x = 195.46

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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.