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Finding the Fourth Proportional to 493.10, 739.98 and 328.54

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Solution

The fourth proportional to 493.10, 739.98 and 328.54 is: 493.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.10 : 739.98 = 328.54 : x
  2. Step 2: Convert to fraction form
    493.10/739.98 = 328.54/x
  3. Step 3: Cross multiply
    493.10x = 739.98 × 328.54
  4. Step 4: Simplify right side
    493.10x = 243,113.03
  5. Step 5: Solve for x
    x = 243,113.03/493.10
  6. Step 6: Final answer
    x = 493.03

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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.