Home / 1,431.03-2,145.06-505.88

Finding the Fourth Proportional to 1,431.03, 2,145.06 and 505.88

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Solution

The fourth proportional to 1,431.03, 2,145.06 and 505.88 is: 758.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.03 : 2,145.06 = 505.88 : x
  2. Step 2: Convert to fraction form
    1,431.03/2,145.06 = 505.88/x
  3. Step 3: Cross multiply
    1,431.03x = 2,145.06 × 505.88
  4. Step 4: Simplify right side
    1,431.03x = 1,085,132.23
  5. Step 5: Solve for x
    x = 1,085,132.23/1,431.03
  6. Step 6: Final answer
    x = 758.29

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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.