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Finding the Fourth Proportional to 288.73, 433.11 and 240.55

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Solution

The fourth proportional to 288.73, 433.11 and 240.55 is: 360.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.73 : 433.11 = 240.55 : x
  2. Step 2: Convert to fraction form
    288.73/433.11 = 240.55/x
  3. Step 3: Cross multiply
    288.73x = 433.11 × 240.55
  4. Step 4: Simplify right side
    288.73x = 104,184.61
  5. Step 5: Solve for x
    x = 104,184.61/288.73
  6. Step 6: Final answer
    x = 360.84

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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.