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Finding the Fourth Proportional to 200.61, 276.93 and 159.12

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Solution

The fourth proportional to 200.61, 276.93 and 159.12 is: 219.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.61 : 276.93 = 159.12 : x
  2. Step 2: Convert to fraction form
    200.61/276.93 = 159.12/x
  3. Step 3: Cross multiply
    200.61x = 276.93 × 159.12
  4. Step 4: Simplify right side
    200.61x = 44,065.10
  5. Step 5: Solve for x
    x = 44,065.10/200.61
  6. Step 6: Final answer
    x = 219.66

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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.