Home / 1,210.22-1,815.38-344.53

Finding the Fourth Proportional to 1,210.22, 1,815.38 and 344.53

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Solution

The fourth proportional to 1,210.22, 1,815.38 and 344.53 is: 516.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.22 : 1,815.38 = 344.53 : x
  2. Step 2: Convert to fraction form
    1,210.22/1,815.38 = 344.53/x
  3. Step 3: Cross multiply
    1,210.22x = 1,815.38 × 344.53
  4. Step 4: Simplify right side
    1,210.22x = 625,454.71
  5. Step 5: Solve for x
    x = 625,454.71/1,210.22
  6. Step 6: Final answer
    x = 516.81

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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.