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Finding the Fourth Proportional to 264.07, 396.04 and 90.73

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Solution

The fourth proportional to 264.07, 396.04 and 90.73 is: 136.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.07 : 396.04 = 90.73 : x
  2. Step 2: Convert to fraction form
    264.07/396.04 = 90.73/x
  3. Step 3: Cross multiply
    264.07x = 396.04 × 90.73
  4. Step 4: Simplify right side
    264.07x = 35,932.71
  5. Step 5: Solve for x
    x = 35,932.71/264.07
  6. Step 6: Final answer
    x = 136.07

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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.