Home / 1,110.20-1,665.23-288.41

Finding the Fourth Proportional to 1,110.20, 1,665.23 and 288.41

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Solution

The fourth proportional to 1,110.20, 1,665.23 and 288.41 is: 432.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.20 : 1,665.23 = 288.41 : x
  2. Step 2: Convert to fraction form
    1,110.20/1,665.23 = 288.41/x
  3. Step 3: Cross multiply
    1,110.20x = 1,665.23 × 288.41
  4. Step 4: Simplify right side
    1,110.20x = 480,268.98
  5. Step 5: Solve for x
    x = 480,268.98/1,110.20
  6. Step 6: Final answer
    x = 432.60

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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.