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Finding the Fourth Proportional to 164.03, 245.72 and 91.67

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Solution

The fourth proportional to 164.03, 245.72 and 91.67 is: 137.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.03 : 245.72 = 91.67 : x
  2. Step 2: Convert to fraction form
    164.03/245.72 = 91.67/x
  3. Step 3: Cross multiply
    164.03x = 245.72 × 91.67
  4. Step 4: Simplify right side
    164.03x = 22,524.15
  5. Step 5: Solve for x
    x = 22,524.15/164.03
  6. Step 6: Final answer
    x = 137.32

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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.