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Finding the Fourth Proportional to 614.08, 920.49 and 353.55

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Solution

The fourth proportional to 614.08, 920.49 and 353.55 is: 529.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.08 : 920.49 = 353.55 : x
  2. Step 2: Convert to fraction form
    614.08/920.49 = 353.55/x
  3. Step 3: Cross multiply
    614.08x = 920.49 × 353.55
  4. Step 4: Simplify right side
    614.08x = 325,439.24
  5. Step 5: Solve for x
    x = 325,439.24/614.08
  6. Step 6: Final answer
    x = 529.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.