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Finding the Fourth Proportional to 117.37, 162.08 and 84.79

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Solution

The fourth proportional to 117.37, 162.08 and 84.79 is: 117.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.37 : 162.08 = 84.79 : x
  2. Step 2: Convert to fraction form
    117.37/162.08 = 84.79/x
  3. Step 3: Cross multiply
    117.37x = 162.08 × 84.79
  4. Step 4: Simplify right side
    117.37x = 13,742.76
  5. Step 5: Solve for x
    x = 13,742.76/117.37
  6. Step 6: Final answer
    x = 117.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.