Home / 1,101.30-1,651.89-370.80

Finding the Fourth Proportional to 1,101.30, 1,651.89 and 370.80

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Solution

The fourth proportional to 1,101.30, 1,651.89 and 370.80 is: 556.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.30 : 1,651.89 = 370.80 : x
  2. Step 2: Convert to fraction form
    1,101.30/1,651.89 = 370.80/x
  3. Step 3: Cross multiply
    1,101.30x = 1,651.89 × 370.80
  4. Step 4: Simplify right side
    1,101.30x = 612,520.81
  5. Step 5: Solve for x
    x = 612,520.81/1,101.30
  6. Step 6: Final answer
    x = 556.18

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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.