Home / 1,359.27-2,039.21-434.90

Finding the Fourth Proportional to 1,359.27, 2,039.21 and 434.90

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Solution

The fourth proportional to 1,359.27, 2,039.21 and 434.90 is: 652.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.27 : 2,039.21 = 434.90 : x
  2. Step 2: Convert to fraction form
    1,359.27/2,039.21 = 434.90/x
  3. Step 3: Cross multiply
    1,359.27x = 2,039.21 × 434.90
  4. Step 4: Simplify right side
    1,359.27x = 886,856.98
  5. Step 5: Solve for x
    x = 886,856.98/1,359.27
  6. Step 6: Final answer
    x = 652.45

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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.