Home / 1,222.18-1,833.63-491.29

Finding the Fourth Proportional to 1,222.18, 1,833.63 and 491.29

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Solution

The fourth proportional to 1,222.18, 1,833.63 and 491.29 is: 737.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222.18 : 1,833.63 = 491.29 : x
  2. Step 2: Convert to fraction form
    1,222.18/1,833.63 = 491.29/x
  3. Step 3: Cross multiply
    1,222.18x = 1,833.63 × 491.29
  4. Step 4: Simplify right side
    1,222.18x = 900,844.08
  5. Step 5: Solve for x
    x = 900,844.08/1,222.18
  6. Step 6: Final answer
    x = 737.08

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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.