Home / 1,082.08-1,621.70-432.06

Finding the Fourth Proportional to 1,082.08, 1,621.70 and 432.06

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Solution

The fourth proportional to 1,082.08, 1,621.70 and 432.06 is: 647.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082.08 : 1,621.70 = 432.06 : x
  2. Step 2: Convert to fraction form
    1,082.08/1,621.70 = 432.06/x
  3. Step 3: Cross multiply
    1,082.08x = 1,621.70 × 432.06
  4. Step 4: Simplify right side
    1,082.08x = 700,671.70
  5. Step 5: Solve for x
    x = 700,671.70/1,082.08
  6. Step 6: Final answer
    x = 647.52

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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.