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Finding the Fourth Proportional to 395.52, 590.60 and 354.12

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Solution

The fourth proportional to 395.52, 590.60 and 354.12 is: 528.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.52 : 590.60 = 354.12 : x
  2. Step 2: Convert to fraction form
    395.52/590.60 = 354.12/x
  3. Step 3: Cross multiply
    395.52x = 590.60 × 354.12
  4. Step 4: Simplify right side
    395.52x = 209,141.50
  5. Step 5: Solve for x
    x = 209,141.50/395.52
  6. Step 6: Final answer
    x = 528.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.