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Finding the Fourth Proportional to 200.04, 275.88 and 137.76

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Solution

The fourth proportional to 200.04, 275.88 and 137.76 is: 189.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.04 : 275.88 = 137.76 : x
  2. Step 2: Convert to fraction form
    200.04/275.88 = 137.76/x
  3. Step 3: Cross multiply
    200.04x = 275.88 × 137.76
  4. Step 4: Simplify right side
    200.04x = 38,005.23
  5. Step 5: Solve for x
    x = 38,005.23/200.04
  6. Step 6: Final answer
    x = 189.99

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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.