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Finding the Fourth Proportional to 1,395.57, 2,093.35 and 662.93

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Solution

The fourth proportional to 1,395.57, 2,093.35 and 662.93 is: 994.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.57 : 2,093.35 = 662.93 : x
  2. Step 2: Convert to fraction form
    1,395.57/2,093.35 = 662.93/x
  3. Step 3: Cross multiply
    1,395.57x = 2,093.35 × 662.93
  4. Step 4: Simplify right side
    1,395.57x = 1,387,736.12
  5. Step 5: Solve for x
    x = 1,387,736.12/1,395.57
  6. Step 6: Final answer
    x = 994.39

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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.