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Finding the Third Proportional to 359.44 and 427.88

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Solution

The third proportional to 359.44 and 427.88 is: 509.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.44 : 427.88 = 427.88 : x
  2. Step 2: Convert to fraction form
    359.44/427.88 = 427.88/x
  3. Step 3: Cross multiply
    359.44x = 427.88 × 427.88
  4. Step 4: Simplify right side
    359.44x = 183,077.02
  5. Step 5: Solve for x
    x = 183,077.02/359.44
  6. Step 6: Final answer
    x = 509.34

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Why These Related Problems?

These problems maintain the same ratio (1.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.