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Finding the Third Proportional to 946.50 and 1,440

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Solution

The third proportional to 946.50 and 1,440 is: 2,190.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.50 : 1,440 = 1,440 : x
  2. Step 2: Convert to fraction form
    946.50/1,440 = 1,440/x
  3. Step 3: Cross multiply
    946.50x = 1,440 × 1,440
  4. Step 4: Simplify right side
    946.50x = 2,073,600
  5. Step 5: Solve for x
    x = 2,073,600/946.50
  6. Step 6: Final answer
    x = 2,190.81

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.