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Finding the Fourth Proportional to 1,137.17, 1,705.05 and 941.69

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Solution

The fourth proportional to 1,137.17, 1,705.05 and 941.69 is: 1,411.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137.17 : 1,705.05 = 941.69 : x
  2. Step 2: Convert to fraction form
    1,137.17/1,705.05 = 941.69/x
  3. Step 3: Cross multiply
    1,137.17x = 1,705.05 × 941.69
  4. Step 4: Simplify right side
    1,137.17x = 1,605,632.80
  5. Step 5: Solve for x
    x = 1,605,632.80/1,137.17
  6. Step 6: Final answer
    x = 1,411.95

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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.