Home / 1,130.26-1,693.88-480.18

Finding the Fourth Proportional to 1,130.26, 1,693.88 and 480.18

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Solution

The fourth proportional to 1,130.26, 1,693.88 and 480.18 is: 719.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130.26 : 1,693.88 = 480.18 : x
  2. Step 2: Convert to fraction form
    1,130.26/1,693.88 = 480.18/x
  3. Step 3: Cross multiply
    1,130.26x = 1,693.88 × 480.18
  4. Step 4: Simplify right side
    1,130.26x = 813,367.30
  5. Step 5: Solve for x
    x = 813,367.30/1,130.26
  6. Step 6: Final answer
    x = 719.63

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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.