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Finding the Fourth Proportional to 193.61, 290.45 and 63.57

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Solution

The fourth proportional to 193.61, 290.45 and 63.57 is: 95.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.61 : 290.45 = 63.57 : x
  2. Step 2: Convert to fraction form
    193.61/290.45 = 63.57/x
  3. Step 3: Cross multiply
    193.61x = 290.45 × 63.57
  4. Step 4: Simplify right side
    193.61x = 18,463.91
  5. Step 5: Solve for x
    x = 18,463.91/193.61
  6. Step 6: Final answer
    x = 95.37

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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.