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Finding the Third Proportional to 356.91 and 747.98

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Solution

The third proportional to 356.91 and 747.98 is: 1,567.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.91 : 747.98 = 747.98 : x
  2. Step 2: Convert to fraction form
    356.91/747.98 = 747.98/x
  3. Step 3: Cross multiply
    356.91x = 747.98 × 747.98
  4. Step 4: Simplify right side
    356.91x = 559,480.63
  5. Step 5: Solve for x
    x = 559,480.63/356.91
  6. Step 6: Final answer
    x = 1,567.58

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.