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Finding the Fourth Proportional to 380.32, 570.86 and 234.16

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Solution

The fourth proportional to 380.32, 570.86 and 234.16 is: 351.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.32 : 570.86 = 234.16 : x
  2. Step 2: Convert to fraction form
    380.32/570.86 = 234.16/x
  3. Step 3: Cross multiply
    380.32x = 570.86 × 234.16
  4. Step 4: Simplify right side
    380.32x = 133,672.58
  5. Step 5: Solve for x
    x = 133,672.58/380.32
  6. Step 6: Final answer
    x = 351.47

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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.