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Finding the Fourth Proportional to 395.28, 594.90 and 355.50

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Solution

The fourth proportional to 395.28, 594.90 and 355.50 is: 535.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.28 : 594.90 = 355.50 : x
  2. Step 2: Convert to fraction form
    395.28/594.90 = 355.50/x
  3. Step 3: Cross multiply
    395.28x = 594.90 × 355.50
  4. Step 4: Simplify right side
    395.28x = 211,486.95
  5. Step 5: Solve for x
    x = 211,486.95/395.28
  6. Step 6: Final answer
    x = 535.03

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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.