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Finding the Fourth Proportional to 162, 243 and 108.03

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Solution

The fourth proportional to 162, 243 and 108.03 is: 162.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    162 : 243 = 108.03 : x
  2. Step 2: Convert to fraction form
    162/243 = 108.03/x
  3. Step 3: Cross multiply
    162x = 243 × 108.03
  4. Step 4: Simplify right side
    162x = 26,252.20
  5. Step 5: Solve for x
    x = 26,252.20/162
  6. Step 6: Final answer
    x = 162.05

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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.