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Finding the Fourth Proportional to 493.40, 739.02 and 328.52

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Solution

The fourth proportional to 493.40, 739.02 and 328.52 is: 492.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.40 : 739.02 = 328.52 : x
  2. Step 2: Convert to fraction form
    493.40/739.02 = 328.52/x
  3. Step 3: Cross multiply
    493.40x = 739.02 × 328.52
  4. Step 4: Simplify right side
    493.40x = 242,782.85
  5. Step 5: Solve for x
    x = 242,782.85/493.40
  6. Step 6: Final answer
    x = 492.06

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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.