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Finding the Fourth Proportional to 1,384.96, 2,077.54 and 519.26

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Solution

The fourth proportional to 1,384.96, 2,077.54 and 519.26 is: 778.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384.96 : 2,077.54 = 519.26 : x
  2. Step 2: Convert to fraction form
    1,384.96/2,077.54 = 519.26/x
  3. Step 3: Cross multiply
    1,384.96x = 2,077.54 × 519.26
  4. Step 4: Simplify right side
    1,384.96x = 1,078,783.42
  5. Step 5: Solve for x
    x = 1,078,783.42/1,384.96
  6. Step 6: Final answer
    x = 778.93

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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.