Home / 1,165.19-1,747.36-385.04

Finding the Fourth Proportional to 1,165.19, 1,747.36 and 385.04

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Solution

The fourth proportional to 1,165.19, 1,747.36 and 385.04 is: 577.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.19 : 1,747.36 = 385.04 : x
  2. Step 2: Convert to fraction form
    1,165.19/1,747.36 = 385.04/x
  3. Step 3: Cross multiply
    1,165.19x = 1,747.36 × 385.04
  4. Step 4: Simplify right side
    1,165.19x = 672,808.34
  5. Step 5: Solve for x
    x = 672,808.34/1,165.19
  6. Step 6: Final answer
    x = 577.43

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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.