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Finding the Fourth Proportional to 1,161.81, 1,742.70 and 468.46

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Solution

The fourth proportional to 1,161.81, 1,742.70 and 468.46 is: 702.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.81 : 1,742.70 = 468.46 : x
  2. Step 2: Convert to fraction form
    1,161.81/1,742.70 = 468.46/x
  3. Step 3: Cross multiply
    1,161.81x = 1,742.70 × 468.46
  4. Step 4: Simplify right side
    1,161.81x = 816,382.90
  5. Step 5: Solve for x
    x = 816,382.90/1,161.81
  6. Step 6: Final answer
    x = 702.68

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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.