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Finding the Fourth Proportional to 493.63, 740.43 and 185.53

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Solution

The fourth proportional to 493.63, 740.43 and 185.53 is: 278.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.63 : 740.43 = 185.53 : x
  2. Step 2: Convert to fraction form
    493.63/740.43 = 185.53/x
  3. Step 3: Cross multiply
    493.63x = 740.43 × 185.53
  4. Step 4: Simplify right side
    493.63x = 137,369.43
  5. Step 5: Solve for x
    x = 137,369.43/493.63
  6. Step 6: Final answer
    x = 278.29

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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.