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Finding the Fourth Proportional to 358.50, 540.20 and 355.52

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Solution

The fourth proportional to 358.50, 540.20 and 355.52 is: 535.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.50 : 540.20 = 355.52 : x
  2. Step 2: Convert to fraction form
    358.50/540.20 = 355.52/x
  3. Step 3: Cross multiply
    358.50x = 540.20 × 355.52
  4. Step 4: Simplify right side
    358.50x = 192,051.90
  5. Step 5: Solve for x
    x = 192,051.90/358.50
  6. Step 6: Final answer
    x = 535.71

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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.