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Finding the Fourth Proportional to 676.29, 1,014.02 and 459.21

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Solution

The fourth proportional to 676.29, 1,014.02 and 459.21 is: 688.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.29 : 1,014.02 = 459.21 : x
  2. Step 2: Convert to fraction form
    676.29/1,014.02 = 459.21/x
  3. Step 3: Cross multiply
    676.29x = 1,014.02 × 459.21
  4. Step 4: Simplify right side
    676.29x = 465,643.05
  5. Step 5: Solve for x
    x = 465,643.05/676.29
  6. Step 6: Final answer
    x = 688.53

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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.