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Finding the Fourth Proportional to 194.91, 291.65 and 117.93

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Solution

The fourth proportional to 194.91, 291.65 and 117.93 is: 176.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.91 : 291.65 = 117.93 : x
  2. Step 2: Convert to fraction form
    194.91/291.65 = 117.93/x
  3. Step 3: Cross multiply
    194.91x = 291.65 × 117.93
  4. Step 4: Simplify right side
    194.91x = 34,394.79
  5. Step 5: Solve for x
    x = 34,394.79/194.91
  6. Step 6: Final answer
    x = 176.47

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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.