Home / 1,214.57-1,821.66-348.68

Finding the Fourth Proportional to 1,214.57, 1,821.66 and 348.68

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Solution

The fourth proportional to 1,214.57, 1,821.66 and 348.68 is: 522.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.57 : 1,821.66 = 348.68 : x
  2. Step 2: Convert to fraction form
    1,214.57/1,821.66 = 348.68/x
  3. Step 3: Cross multiply
    1,214.57x = 1,821.66 × 348.68
  4. Step 4: Simplify right side
    1,214.57x = 635,176.41
  5. Step 5: Solve for x
    x = 635,176.41/1,214.57
  6. Step 6: Final answer
    x = 522.96

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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.