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Finding the Fourth Proportional to 493.58, 740.38 and 331.58

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Solution

The fourth proportional to 493.58, 740.38 and 331.58 is: 497.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.58 : 740.38 = 331.58 : x
  2. Step 2: Convert to fraction form
    493.58/740.38 = 331.58/x
  3. Step 3: Cross multiply
    493.58x = 740.38 × 331.58
  4. Step 4: Simplify right side
    493.58x = 245,495.20
  5. Step 5: Solve for x
    x = 245,495.20/493.58
  6. Step 6: Final answer
    x = 497.38

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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.