Home / 1,210.06-1,815.10-388.32

Finding the Fourth Proportional to 1,210.06, 1,815.10 and 388.32

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Solution

The fourth proportional to 1,210.06, 1,815.10 and 388.32 is: 582.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.06 : 1,815.10 = 388.32 : x
  2. Step 2: Convert to fraction form
    1,210.06/1,815.10 = 388.32/x
  3. Step 3: Cross multiply
    1,210.06x = 1,815.10 × 388.32
  4. Step 4: Simplify right side
    1,210.06x = 704,839.63
  5. Step 5: Solve for x
    x = 704,839.63/1,210.06
  6. Step 6: Final answer
    x = 582.48

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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.