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Finding the Fourth Proportional to 264.08, 396.09 and 99.54

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Solution

The fourth proportional to 264.08, 396.09 and 99.54 is: 149.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.08 : 396.09 = 99.54 : x
  2. Step 2: Convert to fraction form
    264.08/396.09 = 99.54/x
  3. Step 3: Cross multiply
    264.08x = 396.09 × 99.54
  4. Step 4: Simplify right side
    264.08x = 39,426.80
  5. Step 5: Solve for x
    x = 39,426.80/264.08
  6. Step 6: Final answer
    x = 149.30

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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.