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Finding the Fourth Proportional to 468.86, 703.21 and 331.48

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Solution

The fourth proportional to 468.86, 703.21 and 331.48 is: 497.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.86 : 703.21 = 331.48 : x
  2. Step 2: Convert to fraction form
    468.86/703.21 = 331.48/x
  3. Step 3: Cross multiply
    468.86x = 703.21 × 331.48
  4. Step 4: Simplify right side
    468.86x = 233,100.05
  5. Step 5: Solve for x
    x = 233,100.05/468.86
  6. Step 6: Final answer
    x = 497.16

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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.