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Finding the Fourth Proportional to 352.57, 486.55 and 205.30

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Solution

The fourth proportional to 352.57, 486.55 and 205.30 is: 283.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.57 : 486.55 = 205.30 : x
  2. Step 2: Convert to fraction form
    352.57/486.55 = 205.30/x
  3. Step 3: Cross multiply
    352.57x = 486.55 × 205.30
  4. Step 4: Simplify right side
    352.57x = 99,888.72
  5. Step 5: Solve for x
    x = 99,888.72/352.57
  6. Step 6: Final answer
    x = 283.32

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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.