Home / 1,055.03-1,581.57-405.27

Finding the Fourth Proportional to 1,055.03, 1,581.57 and 405.27

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Solution

The fourth proportional to 1,055.03, 1,581.57 and 405.27 is: 607.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055.03 : 1,581.57 = 405.27 : x
  2. Step 2: Convert to fraction form
    1,055.03/1,581.57 = 405.27/x
  3. Step 3: Cross multiply
    1,055.03x = 1,581.57 × 405.27
  4. Step 4: Simplify right side
    1,055.03x = 640,962.87
  5. Step 5: Solve for x
    x = 640,962.87/1,055.03
  6. Step 6: Final answer
    x = 607.53

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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.