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Finding the Third Proportional to 478.88 and 651.38

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Solution

The third proportional to 478.88 and 651.38 is: 886.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    478.88 : 651.38 = 651.38 : x
  2. Step 2: Convert to fraction form
    478.88/651.38 = 651.38/x
  3. Step 3: Cross multiply
    478.88x = 651.38 × 651.38
  4. Step 4: Simplify right side
    478.88x = 424,289.39
  5. Step 5: Solve for x
    x = 424,289.39/478.88
  6. Step 6: Final answer
    x = 886.01

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.