Home / 1,215.15-1,822.68-349.44

Finding the Fourth Proportional to 1,215.15, 1,822.68 and 349.44

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Solution

The fourth proportional to 1,215.15, 1,822.68 and 349.44 is: 524.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.15 : 1,822.68 = 349.44 : x
  2. Step 2: Convert to fraction form
    1,215.15/1,822.68 = 349.44/x
  3. Step 3: Cross multiply
    1,215.15x = 1,822.68 × 349.44
  4. Step 4: Simplify right side
    1,215.15x = 636,917.30
  5. Step 5: Solve for x
    x = 636,917.30/1,215.15
  6. Step 6: Final answer
    x = 524.15

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1.5x scale

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.