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Finding the Third Proportional to 424.88 and 555.75

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Solution

The third proportional to 424.88 and 555.75 is: 726.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.88 : 555.75 = 555.75 : x
  2. Step 2: Convert to fraction form
    424.88/555.75 = 555.75/x
  3. Step 3: Cross multiply
    424.88x = 555.75 × 555.75
  4. Step 4: Simplify right side
    424.88x = 308,858.06
  5. Step 5: Solve for x
    x = 308,858.06/424.88
  6. Step 6: Final answer
    x = 726.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.