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Finding the Fourth Proportional to 1,347.34, 1,858.54 and 849.80

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Solution

The fourth proportional to 1,347.34, 1,858.54 and 849.80 is: 1,172.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.34 : 1,858.54 = 849.80 : x
  2. Step 2: Convert to fraction form
    1,347.34/1,858.54 = 849.80/x
  3. Step 3: Cross multiply
    1,347.34x = 1,858.54 × 849.80
  4. Step 4: Simplify right side
    1,347.34x = 1,579,373.75
  5. Step 5: Solve for x
    x = 1,579,373.75/1,347.34
  6. Step 6: Final answer
    x = 1,172.22

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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.