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Finding the Fourth Proportional to 352.04, 485.55 and 258.75

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Solution

The fourth proportional to 352.04, 485.55 and 258.75 is: 356.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.04 : 485.55 = 258.75 : x
  2. Step 2: Convert to fraction form
    352.04/485.55 = 258.75/x
  3. Step 3: Cross multiply
    352.04x = 485.55 × 258.75
  4. Step 4: Simplify right side
    352.04x = 125,636.06
  5. Step 5: Solve for x
    x = 125,636.06/352.04
  6. Step 6: Final answer
    x = 356.88

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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.