Home / 1,210.35-1,815.81-344.64

Finding the Fourth Proportional to 1,210.35, 1,815.81 and 344.64

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Solution

The fourth proportional to 1,210.35, 1,815.81 and 344.64 is: 517.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.35 : 1,815.81 = 344.64 : x
  2. Step 2: Convert to fraction form
    1,210.35/1,815.81 = 344.64/x
  3. Step 3: Cross multiply
    1,210.35x = 1,815.81 × 344.64
  4. Step 4: Simplify right side
    1,210.35x = 625,800.76
  5. Step 5: Solve for x
    x = 625,800.76/1,210.35
  6. Step 6: Final answer
    x = 517.04

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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.