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Finding the Fourth Proportional to 193.05, 288.98 and 135

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Solution

The fourth proportional to 193.05, 288.98 and 135 is: 202.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.05 : 288.98 = 135 : x
  2. Step 2: Convert to fraction form
    193.05/288.98 = 135/x
  3. Step 3: Cross multiply
    193.05x = 288.98 × 135
  4. Step 4: Simplify right side
    193.05x = 39,011.63
  5. Step 5: Solve for x
    x = 39,011.63/193.05
  6. Step 6: Final answer
    x = 202.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.