Home / 1,429.23-2,142.77-454.77

Finding the Fourth Proportional to 1,429.23, 2,142.77 and 454.77

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Solution

The fourth proportional to 1,429.23, 2,142.77 and 454.77 is: 681.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.23 : 2,142.77 = 454.77 : x
  2. Step 2: Convert to fraction form
    1,429.23/2,142.77 = 454.77/x
  3. Step 3: Cross multiply
    1,429.23x = 2,142.77 × 454.77
  4. Step 4: Simplify right side
    1,429.23x = 974,465.24
  5. Step 5: Solve for x
    x = 974,465.24/1,429.23
  6. Step 6: Final answer
    x = 681.81

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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.