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Finding the Fourth Proportional to 1,573.68, 2,360.81 and 519.55

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Solution

The fourth proportional to 1,573.68, 2,360.81 and 519.55 is: 779.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,573.68 : 2,360.81 = 519.55 : x
  2. Step 2: Convert to fraction form
    1,573.68/2,360.81 = 519.55/x
  3. Step 3: Cross multiply
    1,573.68x = 2,360.81 × 519.55
  4. Step 4: Simplify right side
    1,573.68x = 1,226,558.84
  5. Step 5: Solve for x
    x = 1,226,558.84/1,573.68
  6. Step 6: Final answer
    x = 779.42

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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.