Home / 1,429.03-2,143.52-455.12

Finding the Fourth Proportional to 1,429.03, 2,143.52 and 455.12

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Solution

The fourth proportional to 1,429.03, 2,143.52 and 455.12 is: 682.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.03 : 2,143.52 = 455.12 : x
  2. Step 2: Convert to fraction form
    1,429.03/2,143.52 = 455.12/x
  3. Step 3: Cross multiply
    1,429.03x = 2,143.52 × 455.12
  4. Step 4: Simplify right side
    1,429.03x = 975,545.83
  5. Step 5: Solve for x
    x = 975,545.83/1,429.03
  6. Step 6: Final answer
    x = 682.66

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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.