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Finding the Fourth Proportional to 352.98, 486.06 and 279.07

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Solution

The fourth proportional to 352.98, 486.06 and 279.07 is: 384.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.98 : 486.06 = 279.07 : x
  2. Step 2: Convert to fraction form
    352.98/486.06 = 279.07/x
  3. Step 3: Cross multiply
    352.98x = 486.06 × 279.07
  4. Step 4: Simplify right side
    352.98x = 135,642.33
  5. Step 5: Solve for x
    x = 135,642.33/352.98
  6. Step 6: Final answer
    x = 384.28

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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.