Home / 1,119.02-1,544.25-621.69

Finding the Fourth Proportional to 1,119.02, 1,544.25 and 621.69

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Solution

The fourth proportional to 1,119.02, 1,544.25 and 621.69 is: 857.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.02 : 1,544.25 = 621.69 : x
  2. Step 2: Convert to fraction form
    1,119.02/1,544.25 = 621.69/x
  3. Step 3: Cross multiply
    1,119.02x = 1,544.25 × 621.69
  4. Step 4: Simplify right side
    1,119.02x = 960,037.06
  5. Step 5: Solve for x
    x = 960,037.06/1,119.02
  6. Step 6: Final answer
    x = 857.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.