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Finding the Fourth Proportional to 233.64, 350.43 and 71.28

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Solution

The fourth proportional to 233.64, 350.43 and 71.28 is: 106.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.64 : 350.43 = 71.28 : x
  2. Step 2: Convert to fraction form
    233.64/350.43 = 71.28/x
  3. Step 3: Cross multiply
    233.64x = 350.43 × 71.28
  4. Step 4: Simplify right side
    233.64x = 24,978.65
  5. Step 5: Solve for x
    x = 24,978.65/233.64
  6. Step 6: Final answer
    x = 106.91

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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.