Home / 1,218.69-1,827.81-329.24

Finding the Fourth Proportional to 1,218.69, 1,827.81 and 329.24

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Solution

The fourth proportional to 1,218.69, 1,827.81 and 329.24 is: 493.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.69 : 1,827.81 = 329.24 : x
  2. Step 2: Convert to fraction form
    1,218.69/1,827.81 = 329.24/x
  3. Step 3: Cross multiply
    1,218.69x = 1,827.81 × 329.24
  4. Step 4: Simplify right side
    1,218.69x = 601,779.03
  5. Step 5: Solve for x
    x = 601,779.03/1,218.69
  6. Step 6: Final answer
    x = 493.79

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1.5x scale

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.