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Finding the Fourth Proportional to 288.93, 433.80 and 252.30

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Solution

The fourth proportional to 288.93, 433.80 and 252.30 is: 378.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.93 : 433.80 = 252.30 : x
  2. Step 2: Convert to fraction form
    288.93/433.80 = 252.30/x
  3. Step 3: Cross multiply
    288.93x = 433.80 × 252.30
  4. Step 4: Simplify right side
    288.93x = 109,447.74
  5. Step 5: Solve for x
    x = 109,447.74/288.93
  6. Step 6: Final answer
    x = 378.80

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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.