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Finding the Fourth Proportional to 493.56, 740.39 and 185.63

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Solution

The fourth proportional to 493.56, 740.39 and 185.63 is: 278.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.56 : 740.39 = 185.63 : x
  2. Step 2: Convert to fraction form
    493.56/740.39 = 185.63/x
  3. Step 3: Cross multiply
    493.56x = 740.39 × 185.63
  4. Step 4: Simplify right side
    493.56x = 137,439.52
  5. Step 5: Solve for x
    x = 137,439.52/493.56
  6. Step 6: Final answer
    x = 278.47

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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.