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Finding the Fourth Proportional to 676.60, 1,014.90 and 625.98

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Solution

The fourth proportional to 676.60, 1,014.90 and 625.98 is: 938.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.60 : 1,014.90 = 625.98 : x
  2. Step 2: Convert to fraction form
    676.60/1,014.90 = 625.98/x
  3. Step 3: Cross multiply
    676.60x = 1,014.90 × 625.98
  4. Step 4: Simplify right side
    676.60x = 635,302.03
  5. Step 5: Solve for x
    x = 635,302.03/676.60
  6. Step 6: Final answer
    x = 938.96

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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.