Home / 1,210.37-1,815.66-388.44

Finding the Fourth Proportional to 1,210.37, 1,815.66 and 388.44

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Solution

The fourth proportional to 1,210.37, 1,815.66 and 388.44 is: 582.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.37 : 1,815.66 = 388.44 : x
  2. Step 2: Convert to fraction form
    1,210.37/1,815.66 = 388.44/x
  3. Step 3: Cross multiply
    1,210.37x = 1,815.66 × 388.44
  4. Step 4: Simplify right side
    1,210.37x = 705,274.97
  5. Step 5: Solve for x
    x = 705,274.97/1,210.37
  6. Step 6: Final answer
    x = 582.70

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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.