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Finding the Third Proportional to 364.88 and 784.88

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Solution

The third proportional to 364.88 and 784.88 is: 1,688.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.88 : 784.88 = 784.88 : x
  2. Step 2: Convert to fraction form
    364.88/784.88 = 784.88/x
  3. Step 3: Cross multiply
    364.88x = 784.88 × 784.88
  4. Step 4: Simplify right side
    364.88x = 616,028.77
  5. Step 5: Solve for x
    x = 616,028.77/364.88
  6. Step 6: Final answer
    x = 1,688.33

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.