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Finding the Fourth Proportional to 362.24, 499.20 and 258.56

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Solution

The fourth proportional to 362.24, 499.20 and 258.56 is: 356.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.24 : 499.20 = 258.56 : x
  2. Step 2: Convert to fraction form
    362.24/499.20 = 258.56/x
  3. Step 3: Cross multiply
    362.24x = 499.20 × 258.56
  4. Step 4: Simplify right side
    362.24x = 129,073.15
  5. Step 5: Solve for x
    x = 129,073.15/362.24
  6. Step 6: Final answer
    x = 356.32

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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.