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Finding the Fourth Proportional to 1,778.51, 2,667.77 and 545.93

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Solution

The fourth proportional to 1,778.51, 2,667.77 and 545.93 is: 818.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.51 : 2,667.77 = 545.93 : x
  2. Step 2: Convert to fraction form
    1,778.51/2,667.77 = 545.93/x
  3. Step 3: Cross multiply
    1,778.51x = 2,667.77 × 545.93
  4. Step 4: Simplify right side
    1,778.51x = 1,456,415.68
  5. Step 5: Solve for x
    x = 1,456,415.68/1,778.51
  6. Step 6: Final answer
    x = 818.90

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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.