Home / 1,215.50-1,823.56-349.82

Finding the Fourth Proportional to 1,215.50, 1,823.56 and 349.82

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Solution

The fourth proportional to 1,215.50, 1,823.56 and 349.82 is: 524.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.50 : 1,823.56 = 349.82 : x
  2. Step 2: Convert to fraction form
    1,215.50/1,823.56 = 349.82/x
  3. Step 3: Cross multiply
    1,215.50x = 1,823.56 × 349.82
  4. Step 4: Simplify right side
    1,215.50x = 637,917.76
  5. Step 5: Solve for x
    x = 637,917.76/1,215.50
  6. Step 6: Final answer
    x = 524.82

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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.