Home / 1,178.12-1,767.19-356.39

Finding the Fourth Proportional to 1,178.12, 1,767.19 and 356.39

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Solution

The fourth proportional to 1,178.12, 1,767.19 and 356.39 is: 534.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178.12 : 1,767.19 = 356.39 : x
  2. Step 2: Convert to fraction form
    1,178.12/1,767.19 = 356.39/x
  3. Step 3: Cross multiply
    1,178.12x = 1,767.19 × 356.39
  4. Step 4: Simplify right side
    1,178.12x = 629,808.84
  5. Step 5: Solve for x
    x = 629,808.84/1,178.12
  6. Step 6: Final answer
    x = 534.59

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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.