Home / 1,152.19-1,727.80-439.35

Finding the Fourth Proportional to 1,152.19, 1,727.80 and 439.35

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Solution

The fourth proportional to 1,152.19, 1,727.80 and 439.35 is: 658.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152.19 : 1,727.80 = 439.35 : x
  2. Step 2: Convert to fraction form
    1,152.19/1,727.80 = 439.35/x
  3. Step 3: Cross multiply
    1,152.19x = 1,727.80 × 439.35
  4. Step 4: Simplify right side
    1,152.19x = 759,099.19
  5. Step 5: Solve for x
    x = 759,099.19/1,152.19
  6. Step 6: Final answer
    x = 658.83

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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.