Home / 1,326.29-1,989.53-401.92

Finding the Fourth Proportional to 1,326.29, 1,989.53 and 401.92

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Solution

The fourth proportional to 1,326.29, 1,989.53 and 401.92 is: 602.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326.29 : 1,989.53 = 401.92 : x
  2. Step 2: Convert to fraction form
    1,326.29/1,989.53 = 401.92/x
  3. Step 3: Cross multiply
    1,326.29x = 1,989.53 × 401.92
  4. Step 4: Simplify right side
    1,326.29x = 799,639.87
  5. Step 5: Solve for x
    x = 799,639.87/1,326.29
  6. Step 6: Final answer
    x = 602.91

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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.