Home / 1,299.76-1,949.60-434.08

Finding the Fourth Proportional to 1,299.76, 1,949.60 and 434.08

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Solution

The fourth proportional to 1,299.76, 1,949.60 and 434.08 is: 651.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299.76 : 1,949.60 = 434.08 : x
  2. Step 2: Convert to fraction form
    1,299.76/1,949.60 = 434.08/x
  3. Step 3: Cross multiply
    1,299.76x = 1,949.60 × 434.08
  4. Step 4: Simplify right side
    1,299.76x = 846,282.37
  5. Step 5: Solve for x
    x = 846,282.37/1,299.76
  6. Step 6: Final answer
    x = 651.11

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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.