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Finding the Fourth Proportional to 164.18, 245.73 and 143.67

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Solution

The fourth proportional to 164.18, 245.73 and 143.67 is: 215.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.18 : 245.73 = 143.67 : x
  2. Step 2: Convert to fraction form
    164.18/245.73 = 143.67/x
  3. Step 3: Cross multiply
    164.18x = 245.73 × 143.67
  4. Step 4: Simplify right side
    164.18x = 35,305.49
  5. Step 5: Solve for x
    x = 35,305.49/164.18
  6. Step 6: Final answer
    x = 215.05

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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.