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Finding the Fourth Proportional to 1,166.70, 1,747.74 and 726.87

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Solution

The fourth proportional to 1,166.70, 1,747.74 and 726.87 is: 1,088.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,166.70 : 1,747.74 = 726.87 : x
  2. Step 2: Convert to fraction form
    1,166.70/1,747.74 = 726.87/x
  3. Step 3: Cross multiply
    1,166.70x = 1,747.74 × 726.87
  4. Step 4: Simplify right side
    1,166.70x = 1,270,379.77
  5. Step 5: Solve for x
    x = 1,270,379.77/1,166.70
  6. Step 6: Final answer
    x = 1,088.87

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1.5x scale

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.