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Finding the Fourth Proportional to 200.62, 276.86 and 117.74

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Solution

The fourth proportional to 200.62, 276.86 and 117.74 is: 162.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.62 : 276.86 = 117.74 : x
  2. Step 2: Convert to fraction form
    200.62/276.86 = 117.74/x
  3. Step 3: Cross multiply
    200.62x = 276.86 × 117.74
  4. Step 4: Simplify right side
    200.62x = 32,597.50
  5. Step 5: Solve for x
    x = 32,597.50/200.62
  6. Step 6: Final answer
    x = 162.48

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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.