Home / 1,212.23-1,818.21-334.80

Finding the Fourth Proportional to 1,212.23, 1,818.21 and 334.80

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Solution

The fourth proportional to 1,212.23, 1,818.21 and 334.80 is: 502.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212.23 : 1,818.21 = 334.80 : x
  2. Step 2: Convert to fraction form
    1,212.23/1,818.21 = 334.80/x
  3. Step 3: Cross multiply
    1,212.23x = 1,818.21 × 334.80
  4. Step 4: Simplify right side
    1,212.23x = 608,736.71
  5. Step 5: Solve for x
    x = 608,736.71/1,212.23
  6. Step 6: Final answer
    x = 502.16

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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.