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Finding the Fourth Proportional to 1,395.13, 2,092.69 and 470.69

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Solution

The fourth proportional to 1,395.13, 2,092.69 and 470.69 is: 706.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.13 : 2,092.69 = 470.69 : x
  2. Step 2: Convert to fraction form
    1,395.13/2,092.69 = 470.69/x
  3. Step 3: Cross multiply
    1,395.13x = 2,092.69 × 470.69
  4. Step 4: Simplify right side
    1,395.13x = 984,997.70
  5. Step 5: Solve for x
    x = 984,997.70/1,395.13
  6. Step 6: Final answer
    x = 706.03

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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.