Home / 1,129.26-1,694.14-359.76

Finding the Fourth Proportional to 1,129.26, 1,694.14 and 359.76

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Solution

The fourth proportional to 1,129.26, 1,694.14 and 359.76 is: 539.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129.26 : 1,694.14 = 359.76 : x
  2. Step 2: Convert to fraction form
    1,129.26/1,694.14 = 359.76/x
  3. Step 3: Cross multiply
    1,129.26x = 1,694.14 × 359.76
  4. Step 4: Simplify right side
    1,129.26x = 609,483.81
  5. Step 5: Solve for x
    x = 609,483.81/1,129.26
  6. Step 6: Final answer
    x = 539.72

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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.