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Finding the Third Proportional to 374.91 and 486.98

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Solution

The third proportional to 374.91 and 486.98 is: 632.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.91 : 486.98 = 486.98 : x
  2. Step 2: Convert to fraction form
    374.91/486.98 = 486.98/x
  3. Step 3: Cross multiply
    374.91x = 486.98 × 486.98
  4. Step 4: Simplify right side
    374.91x = 237,153.78
  5. Step 5: Solve for x
    x = 237,153.78/374.91
  6. Step 6: Final answer
    x = 632.57

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.