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Finding the Fourth Proportional to 118.67, 176.58 and 117.05

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Solution

The fourth proportional to 118.67, 176.58 and 117.05 is: 174.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.67 : 176.58 = 117.05 : x
  2. Step 2: Convert to fraction form
    118.67/176.58 = 117.05/x
  3. Step 3: Cross multiply
    118.67x = 176.58 × 117.05
  4. Step 4: Simplify right side
    118.67x = 20,667.81
  5. Step 5: Solve for x
    x = 20,667.81/118.67
  6. Step 6: Final answer
    x = 174.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.