Home / 1,317.56-1,976.65-451.88

Finding the Fourth Proportional to 1,317.56, 1,976.65 and 451.88

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Solution

The fourth proportional to 1,317.56, 1,976.65 and 451.88 is: 677.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.56 : 1,976.65 = 451.88 : x
  2. Step 2: Convert to fraction form
    1,317.56/1,976.65 = 451.88/x
  3. Step 3: Cross multiply
    1,317.56x = 1,976.65 × 451.88
  4. Step 4: Simplify right side
    1,317.56x = 893,197.59
  5. Step 5: Solve for x
    x = 893,197.59/1,317.56
  6. Step 6: Final answer
    x = 677.92

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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.