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Finding the Fourth Proportional to 1,217.48, 1,826.28 and 395.82

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Solution

The fourth proportional to 1,217.48, 1,826.28 and 395.82 is: 593.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.48 : 1,826.28 = 395.82 : x
  2. Step 2: Convert to fraction form
    1,217.48/1,826.28 = 395.82/x
  3. Step 3: Cross multiply
    1,217.48x = 1,826.28 × 395.82
  4. Step 4: Simplify right side
    1,217.48x = 722,878.15
  5. Step 5: Solve for x
    x = 722,878.15/1,217.48
  6. Step 6: Final answer
    x = 593.75

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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.