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Finding the Fourth Proportional to 118.50, 162.44 and 118.28

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Solution

The fourth proportional to 118.50, 162.44 and 118.28 is: 162.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.50 : 162.44 = 118.28 : x
  2. Step 2: Convert to fraction form
    118.50/162.44 = 118.28/x
  3. Step 3: Cross multiply
    118.50x = 162.44 × 118.28
  4. Step 4: Simplify right side
    118.50x = 19,212.81
  5. Step 5: Solve for x
    x = 19,212.81/118.50
  6. Step 6: Final answer
    x = 162.13

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.