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Finding the Fourth Proportional to 1,395.54, 2,090.40 and 701.82

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Solution

The fourth proportional to 1,395.54, 2,090.40 and 701.82 is: 1,051.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.54 : 2,090.40 = 701.82 : x
  2. Step 2: Convert to fraction form
    1,395.54/2,090.40 = 701.82/x
  3. Step 3: Cross multiply
    1,395.54x = 2,090.40 × 701.82
  4. Step 4: Simplify right side
    1,395.54x = 1,467,084.53
  5. Step 5: Solve for x
    x = 1,467,084.53/1,395.54
  6. Step 6: Final answer
    x = 1,051.27

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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.