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Finding the Fourth Proportional to 1,367.21, 2,050.99 and 545.47

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Solution

The fourth proportional to 1,367.21, 2,050.99 and 545.47 is: 818.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367.21 : 2,050.99 = 545.47 : x
  2. Step 2: Convert to fraction form
    1,367.21/2,050.99 = 545.47/x
  3. Step 3: Cross multiply
    1,367.21x = 2,050.99 × 545.47
  4. Step 4: Simplify right side
    1,367.21x = 1,118,747.02
  5. Step 5: Solve for x
    x = 1,118,747.02/1,367.21
  6. Step 6: Final answer
    x = 818.27

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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.