Home / 1,370.32-2,055.56-445.88

Finding the Fourth Proportional to 1,370.32, 2,055.56 and 445.88

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Solution

The fourth proportional to 1,370.32, 2,055.56 and 445.88 is: 668.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.32 : 2,055.56 = 445.88 : x
  2. Step 2: Convert to fraction form
    1,370.32/2,055.56 = 445.88/x
  3. Step 3: Cross multiply
    1,370.32x = 2,055.56 × 445.88
  4. Step 4: Simplify right side
    1,370.32x = 916,533.09
  5. Step 5: Solve for x
    x = 916,533.09/1,370.32
  6. Step 6: Final answer
    x = 668.85

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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.