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Finding the Third Proportional to 431.50 and 946.88

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Solution

The third proportional to 431.50 and 946.88 is: 2,077.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    431.50 : 946.88 = 946.88 : x
  2. Step 2: Convert to fraction form
    431.50/946.88 = 946.88/x
  3. Step 3: Cross multiply
    431.50x = 946.88 × 946.88
  4. Step 4: Simplify right side
    431.50x = 896,572.27
  5. Step 5: Solve for x
    x = 896,572.27/431.50
  6. Step 6: Final answer
    x = 2,077.80

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.