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Finding the Fourth Proportional to 1,341.59, 2,011.98 and 519.68

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Solution

The fourth proportional to 1,341.59, 2,011.98 and 519.68 is: 779.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341.59 : 2,011.98 = 519.68 : x
  2. Step 2: Convert to fraction form
    1,341.59/2,011.98 = 519.68/x
  3. Step 3: Cross multiply
    1,341.59x = 2,011.98 × 519.68
  4. Step 4: Simplify right side
    1,341.59x = 1,045,575.71
  5. Step 5: Solve for x
    x = 1,045,575.71/1,341.59
  6. Step 6: Final answer
    x = 779.36

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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.