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Finding the Fourth Proportional to 486.06, 669.78 and 375.36

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Solution

The fourth proportional to 486.06, 669.78 and 375.36 is: 517.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.06 : 669.78 = 375.36 : x
  2. Step 2: Convert to fraction form
    486.06/669.78 = 375.36/x
  3. Step 3: Cross multiply
    486.06x = 669.78 × 375.36
  4. Step 4: Simplify right side
    486.06x = 251,408.62
  5. Step 5: Solve for x
    x = 251,408.62/486.06
  6. Step 6: Final answer
    x = 517.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.