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Finding the Fourth Proportional to 493.15, 739.12 and 249.75

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Solution

The fourth proportional to 493.15, 739.12 and 249.75 is: 374.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.15 : 739.12 = 249.75 : x
  2. Step 2: Convert to fraction form
    493.15/739.12 = 249.75/x
  3. Step 3: Cross multiply
    493.15x = 739.12 × 249.75
  4. Step 4: Simplify right side
    493.15x = 184,595.22
  5. Step 5: Solve for x
    x = 184,595.22/493.15
  6. Step 6: Final answer
    x = 374.32

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Double scale
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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.