Home / 1,210.19-1,815.35-344.57

Finding the Fourth Proportional to 1,210.19, 1,815.35 and 344.57

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Solution

The fourth proportional to 1,210.19, 1,815.35 and 344.57 is: 516.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.19 : 1,815.35 = 344.57 : x
  2. Step 2: Convert to fraction form
    1,210.19/1,815.35 = 344.57/x
  3. Step 3: Cross multiply
    1,210.19x = 1,815.35 × 344.57
  4. Step 4: Simplify right side
    1,210.19x = 625,504.35
  5. Step 5: Solve for x
    x = 625,504.35/1,210.19
  6. Step 6: Final answer
    x = 516.87

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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.