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Finding the Fourth Proportional to 1,777.86, 2,667.08 and 545.14

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Solution

The fourth proportional to 1,777.86, 2,667.08 and 545.14 is: 817.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,777.86 : 2,667.08 = 545.14 : x
  2. Step 2: Convert to fraction form
    1,777.86/2,667.08 = 545.14/x
  3. Step 3: Cross multiply
    1,777.86x = 2,667.08 × 545.14
  4. Step 4: Simplify right side
    1,777.86x = 1,453,931.99
  5. Step 5: Solve for x
    x = 1,453,931.99/1,777.86
  6. Step 6: Final answer
    x = 817.80

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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.