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Finding the Fourth Proportional to 1,777.76, 2,667.03 and 545.26

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Solution

The fourth proportional to 1,777.76, 2,667.03 and 545.26 is: 818.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,777.76 : 2,667.03 = 545.26 : x
  2. Step 2: Convert to fraction form
    1,777.76/2,667.03 = 545.26/x
  3. Step 3: Cross multiply
    1,777.76x = 2,667.03 × 545.26
  4. Step 4: Simplify right side
    1,777.76x = 1,454,222.05
  5. Step 5: Solve for x
    x = 1,454,222.05/1,777.76
  6. Step 6: Final answer
    x = 818.01

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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.