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Finding the Fourth Proportional to 539.79, 813.62 and 493.62

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Solution

The fourth proportional to 539.79, 813.62 and 493.62 is: 744.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.79 : 813.62 = 493.62 : x
  2. Step 2: Convert to fraction form
    539.79/813.62 = 493.62/x
  3. Step 3: Cross multiply
    539.79x = 813.62 × 493.62
  4. Step 4: Simplify right side
    539.79x = 401,619.10
  5. Step 5: Solve for x
    x = 401,619.10/539.79
  6. Step 6: Final answer
    x = 744.03

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.