Home / 1,022.36-1,534.60-905.99

Finding the Fourth Proportional to 1,022.36, 1,534.60 and 905.99

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Solution

The fourth proportional to 1,022.36, 1,534.60 and 905.99 is: 1,359.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,022.36 : 1,534.60 = 905.99 : x
  2. Step 2: Convert to fraction form
    1,022.36/1,534.60 = 905.99/x
  3. Step 3: Cross multiply
    1,022.36x = 1,534.60 × 905.99
  4. Step 4: Simplify right side
    1,022.36x = 1,390,320.62
  5. Step 5: Solve for x
    x = 1,390,320.62/1,022.36
  6. Step 6: Final answer
    x = 1,359.92

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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.