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Finding the Fourth Proportional to 468.30, 703.80 and 408.90

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Solution

The fourth proportional to 468.30, 703.80 and 408.90 is: 614.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.30 : 703.80 = 408.90 : x
  2. Step 2: Convert to fraction form
    468.30/703.80 = 408.90/x
  3. Step 3: Cross multiply
    468.30x = 703.80 × 408.90
  4. Step 4: Simplify right side
    468.30x = 287,783.82
  5. Step 5: Solve for x
    x = 287,783.82/468.30
  6. Step 6: Final answer
    x = 614.53

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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.