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Finding the Third Proportional to 989.50 and 1,594

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Solution

The third proportional to 989.50 and 1,594 is: 2,567.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    989.50 : 1,594 = 1,594 : x
  2. Step 2: Convert to fraction form
    989.50/1,594 = 1,594/x
  3. Step 3: Cross multiply
    989.50x = 1,594 × 1,594
  4. Step 4: Simplify right side
    989.50x = 2,540,836
  5. Step 5: Solve for x
    x = 2,540,836/989.50
  6. Step 6: Final answer
    x = 2,567.80

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.