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Finding the Fourth Proportional to 194.74, 292.47 and 130.66

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Solution

The fourth proportional to 194.74, 292.47 and 130.66 is: 196.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.74 : 292.47 = 130.66 : x
  2. Step 2: Convert to fraction form
    194.74/292.47 = 130.66/x
  3. Step 3: Cross multiply
    194.74x = 292.47 × 130.66
  4. Step 4: Simplify right side
    194.74x = 38,214.13
  5. Step 5: Solve for x
    x = 38,214.13/194.74
  6. Step 6: Final answer
    x = 196.23

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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.