Home / 1,195.18-1,649.33-664.07

Finding the Fourth Proportional to 1,195.18, 1,649.33 and 664.07

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Solution

The fourth proportional to 1,195.18, 1,649.33 and 664.07 is: 916.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,195.18 : 1,649.33 = 664.07 : x
  2. Step 2: Convert to fraction form
    1,195.18/1,649.33 = 664.07/x
  3. Step 3: Cross multiply
    1,195.18x = 1,649.33 × 664.07
  4. Step 4: Simplify right side
    1,195.18x = 1,095,270.57
  5. Step 5: Solve for x
    x = 1,095,270.57/1,195.18
  6. Step 6: Final answer
    x = 916.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.