Home / 1,055.32-1,583.56-439.45

Finding the Fourth Proportional to 1,055.32, 1,583.56 and 439.45

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Solution

The fourth proportional to 1,055.32, 1,583.56 and 439.45 is: 659.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055.32 : 1,583.56 = 439.45 : x
  2. Step 2: Convert to fraction form
    1,055.32/1,583.56 = 439.45/x
  3. Step 3: Cross multiply
    1,055.32x = 1,583.56 × 439.45
  4. Step 4: Simplify right side
    1,055.32x = 695,895.44
  5. Step 5: Solve for x
    x = 695,895.44/1,055.32
  6. Step 6: Final answer
    x = 659.42

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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.