Home / 1,431.02-2,146.44-457.22

Finding the Fourth Proportional to 1,431.02, 2,146.44 and 457.22

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Solution

The fourth proportional to 1,431.02, 2,146.44 and 457.22 is: 685.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.02 : 2,146.44 = 457.22 : x
  2. Step 2: Convert to fraction form
    1,431.02/2,146.44 = 457.22/x
  3. Step 3: Cross multiply
    1,431.02x = 2,146.44 × 457.22
  4. Step 4: Simplify right side
    1,431.02x = 981,395.30
  5. Step 5: Solve for x
    x = 981,395.30/1,431.02
  6. Step 6: Final answer
    x = 685.80

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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.