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Finding the Fourth Proportional to 194.08, 291.13 and 117.53

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Solution

The fourth proportional to 194.08, 291.13 and 117.53 is: 176.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.08 : 291.13 = 117.53 : x
  2. Step 2: Convert to fraction form
    194.08/291.13 = 117.53/x
  3. Step 3: Cross multiply
    194.08x = 291.13 × 117.53
  4. Step 4: Simplify right side
    194.08x = 34,217.49
  5. Step 5: Solve for x
    x = 34,217.49/194.08
  6. Step 6: Final answer
    x = 176.31

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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.