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Finding the Fourth Proportional to 326.08, 488.98 and 141

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Solution

The fourth proportional to 326.08, 488.98 and 141 is: 211.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.08 : 488.98 = 141 : x
  2. Step 2: Convert to fraction form
    326.08/488.98 = 141/x
  3. Step 3: Cross multiply
    326.08x = 488.98 × 141
  4. Step 4: Simplify right side
    326.08x = 68,946.18
  5. Step 5: Solve for x
    x = 68,946.18/326.08
  6. Step 6: Final answer
    x = 211.44

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.