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Finding the Fourth Proportional to 1,601.73, 2,400.66 and 778.77

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Solution

The fourth proportional to 1,601.73, 2,400.66 and 778.77 is: 1,167.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,601.73 : 2,400.66 = 778.77 : x
  2. Step 2: Convert to fraction form
    1,601.73/2,400.66 = 778.77/x
  3. Step 3: Cross multiply
    1,601.73x = 2,400.66 × 778.77
  4. Step 4: Simplify right side
    1,601.73x = 1,869,561.99
  5. Step 5: Solve for x
    x = 1,869,561.99/1,601.73
  6. Step 6: Final answer
    x = 1,167.21

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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.