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Finding the Fourth Proportional to 1,441.73, 2,161.23 and 710.91

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Solution

The fourth proportional to 1,441.73, 2,161.23 and 710.91 is: 1,065.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,441.73 : 2,161.23 = 710.91 : x
  2. Step 2: Convert to fraction form
    1,441.73/2,161.23 = 710.91/x
  3. Step 3: Cross multiply
    1,441.73x = 2,161.23 × 710.91
  4. Step 4: Simplify right side
    1,441.73x = 1,536,440.02
  5. Step 5: Solve for x
    x = 1,536,440.02/1,441.73
  6. Step 6: Final answer
    x = 1,065.70

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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.