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Finding the Fourth Proportional to 493.93, 740.40 and 331.24

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Solution

The fourth proportional to 493.93, 740.40 and 331.24 is: 496.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.93 : 740.40 = 331.24 : x
  2. Step 2: Convert to fraction form
    493.93/740.40 = 331.24/x
  3. Step 3: Cross multiply
    493.93x = 740.40 × 331.24
  4. Step 4: Simplify right side
    493.93x = 245,250.10
  5. Step 5: Solve for x
    x = 245,250.10/493.93
  6. Step 6: Final answer
    x = 496.53

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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.