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Finding the Third Proportional to 720 and 946.50

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Solution

The third proportional to 720 and 946.50 is: 1,244.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    720 : 946.50 = 946.50 : x
  2. Step 2: Convert to fraction form
    720/946.50 = 946.50/x
  3. Step 3: Cross multiply
    720x = 946.50 × 946.50
  4. Step 4: Simplify right side
    720x = 895,862.25
  5. Step 5: Solve for x
    x = 895,862.25/720
  6. Step 6: Final answer
    x = 1,244.25

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.