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Finding the Fourth Proportional to 555.76, 833.96 and 214

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Solution

The fourth proportional to 555.76, 833.96 and 214 is: 321.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.76 : 833.96 = 214 : x
  2. Step 2: Convert to fraction form
    555.76/833.96 = 214/x
  3. Step 3: Cross multiply
    555.76x = 833.96 × 214
  4. Step 4: Simplify right side
    555.76x = 178,467.44
  5. Step 5: Solve for x
    x = 178,467.44/555.76
  6. Step 6: Final answer
    x = 321.12

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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.