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Finding the Fourth Proportional to 200.11, 275.95 and 153.48

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Solution

The fourth proportional to 200.11, 275.95 and 153.48 is: 211.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.11 : 275.95 = 153.48 : x
  2. Step 2: Convert to fraction form
    200.11/275.95 = 153.48/x
  3. Step 3: Cross multiply
    200.11x = 275.95 × 153.48
  4. Step 4: Simplify right side
    200.11x = 42,352.81
  5. Step 5: Solve for x
    x = 42,352.81/200.11
  6. Step 6: Final answer
    x = 211.65

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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.