Home / 1,220.25-1,829.47-570.53

Finding the Fourth Proportional to 1,220.25, 1,829.47 and 570.53

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Solution

The fourth proportional to 1,220.25, 1,829.47 and 570.53 is: 855.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.25 : 1,829.47 = 570.53 : x
  2. Step 2: Convert to fraction form
    1,220.25/1,829.47 = 570.53/x
  3. Step 3: Cross multiply
    1,220.25x = 1,829.47 × 570.53
  4. Step 4: Simplify right side
    1,220.25x = 1,043,767.52
  5. Step 5: Solve for x
    x = 1,043,767.52/1,220.25
  6. Step 6: Final answer
    x = 855.37

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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.