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Finding the Fourth Proportional to 493.92, 740.76 and 185.70

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Solution

The fourth proportional to 493.92, 740.76 and 185.70 is: 278.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.92 : 740.76 = 185.70 : x
  2. Step 2: Convert to fraction form
    493.92/740.76 = 185.70/x
  3. Step 3: Cross multiply
    493.92x = 740.76 × 185.70
  4. Step 4: Simplify right side
    493.92x = 137,559.13
  5. Step 5: Solve for x
    x = 137,559.13/493.92
  6. Step 6: Final answer
    x = 278.50

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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.