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Finding the Fourth Proportional to 676.61, 1,014.41 and 214.14

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Solution

The fourth proportional to 676.61, 1,014.41 and 214.14 is: 321.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.61 : 1,014.41 = 214.14 : x
  2. Step 2: Convert to fraction form
    676.61/1,014.41 = 214.14/x
  3. Step 3: Cross multiply
    676.61x = 1,014.41 × 214.14
  4. Step 4: Simplify right side
    676.61x = 217,225.76
  5. Step 5: Solve for x
    x = 217,225.76/676.61
  6. Step 6: Final answer
    x = 321.05

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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.