Home / 1,055.40-1,583.25-325.09

Finding the Fourth Proportional to 1,055.40, 1,583.25 and 325.09

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Solution

The fourth proportional to 1,055.40, 1,583.25 and 325.09 is: 487.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055.40 : 1,583.25 = 325.09 : x
  2. Step 2: Convert to fraction form
    1,055.40/1,583.25 = 325.09/x
  3. Step 3: Cross multiply
    1,055.40x = 1,583.25 × 325.09
  4. Step 4: Simplify right side
    1,055.40x = 514,698.74
  5. Step 5: Solve for x
    x = 514,698.74/1,055.40
  6. Step 6: Final answer
    x = 487.68

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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.