Home / 1,322.10-1,983.15-348.19

Finding the Fourth Proportional to 1,322.10, 1,983.15 and 348.19

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Solution

The fourth proportional to 1,322.10, 1,983.15 and 348.19 is: 522.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.10 : 1,983.15 = 348.19 : x
  2. Step 2: Convert to fraction form
    1,322.10/1,983.15 = 348.19/x
  3. Step 3: Cross multiply
    1,322.10x = 1,983.15 × 348.19
  4. Step 4: Simplify right side
    1,322.10x = 690,508.04
  5. Step 5: Solve for x
    x = 690,508.04/1,322.10
  6. Step 6: Final answer
    x = 522.28

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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.