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Finding the Fourth Proportional to 1,699.34, 2,548.08 and 920.26

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Solution

The fourth proportional to 1,699.34, 2,548.08 and 920.26 is: 1,379.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,699.34 : 2,548.08 = 920.26 : x
  2. Step 2: Convert to fraction form
    1,699.34/2,548.08 = 920.26/x
  3. Step 3: Cross multiply
    1,699.34x = 2,548.08 × 920.26
  4. Step 4: Simplify right side
    1,699.34x = 2,344,896.10
  5. Step 5: Solve for x
    x = 2,344,896.10/1,699.34
  6. Step 6: Final answer
    x = 1,379.89

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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.