Home / 1,317.13-1,976.72-496.15

Finding the Fourth Proportional to 1,317.13, 1,976.72 and 496.15

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Solution

The fourth proportional to 1,317.13, 1,976.72 and 496.15 is: 744.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.13 : 1,976.72 = 496.15 : x
  2. Step 2: Convert to fraction form
    1,317.13/1,976.72 = 496.15/x
  3. Step 3: Cross multiply
    1,317.13x = 1,976.72 × 496.15
  4. Step 4: Simplify right side
    1,317.13x = 980,749.63
  5. Step 5: Solve for x
    x = 980,749.63/1,317.13
  6. Step 6: Final answer
    x = 744.61

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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.