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Finding the Fourth Proportional to 358.44, 540.38 and 355.34

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Solution

The fourth proportional to 358.44, 540.38 and 355.34 is: 535.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.44 : 540.38 = 355.34 : x
  2. Step 2: Convert to fraction form
    358.44/540.38 = 355.34/x
  3. Step 3: Cross multiply
    358.44x = 540.38 × 355.34
  4. Step 4: Simplify right side
    358.44x = 192,014.15
  5. Step 5: Solve for x
    x = 192,014.15/358.44
  6. Step 6: Final answer
    x = 535.69

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.