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Finding the Fourth Proportional to 1,243.14, 1,714.70 and 800.34

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Solution

The fourth proportional to 1,243.14, 1,714.70 and 800.34 is: 1,103.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243.14 : 1,714.70 = 800.34 : x
  2. Step 2: Convert to fraction form
    1,243.14/1,714.70 = 800.34/x
  3. Step 3: Cross multiply
    1,243.14x = 1,714.70 × 800.34
  4. Step 4: Simplify right side
    1,243.14x = 1,372,343.00
  5. Step 5: Solve for x
    x = 1,372,343.00/1,243.14
  6. Step 6: Final answer
    x = 1,103.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.