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Finding the Fourth Proportional to 288.40, 433.55 and 237.42

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Solution

The fourth proportional to 288.40, 433.55 and 237.42 is: 356.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.40 : 433.55 = 237.42 : x
  2. Step 2: Convert to fraction form
    288.40/433.55 = 237.42/x
  3. Step 3: Cross multiply
    288.40x = 433.55 × 237.42
  4. Step 4: Simplify right side
    288.40x = 102,933.44
  5. Step 5: Solve for x
    x = 102,933.44/288.40
  6. Step 6: Final answer
    x = 356.91

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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.