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Finding the Fourth Proportional to 1,395.90, 2,093.34 and 471.30

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Solution

The fourth proportional to 1,395.90, 2,093.34 and 471.30 is: 706.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.90 : 2,093.34 = 471.30 : x
  2. Step 2: Convert to fraction form
    1,395.90/2,093.34 = 471.30/x
  3. Step 3: Cross multiply
    1,395.90x = 2,093.34 × 471.30
  4. Step 4: Simplify right side
    1,395.90x = 986,591.14
  5. Step 5: Solve for x
    x = 986,591.14/1,395.90
  6. Step 6: Final answer
    x = 706.78

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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.