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Finding the Fourth Proportional to 1,492.93, 2,240.42 and 519.03

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Solution

The fourth proportional to 1,492.93, 2,240.42 and 519.03 is: 778.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,492.93 : 2,240.42 = 519.03 : x
  2. Step 2: Convert to fraction form
    1,492.93/2,240.42 = 519.03/x
  3. Step 3: Cross multiply
    1,492.93x = 2,240.42 × 519.03
  4. Step 4: Simplify right side
    1,492.93x = 1,162,845.52
  5. Step 5: Solve for x
    x = 1,162,845.52/1,492.93
  6. Step 6: Final answer
    x = 778.90

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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.