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Finding the Fourth Proportional to 1,702.27, 2,552.64 and 777.61

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Solution

The fourth proportional to 1,702.27, 2,552.64 and 777.61 is: 1,166.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,702.27 : 2,552.64 = 777.61 : x
  2. Step 2: Convert to fraction form
    1,702.27/2,552.64 = 777.61/x
  3. Step 3: Cross multiply
    1,702.27x = 2,552.64 × 777.61
  4. Step 4: Simplify right side
    1,702.27x = 1,984,958.39
  5. Step 5: Solve for x
    x = 1,984,958.39/1,702.27
  6. Step 6: Final answer
    x = 1,166.07

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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.