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Finding the Fourth Proportional to 1,080.10, 1,620.45 and 464.10

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Solution

The fourth proportional to 1,080.10, 1,620.45 and 464.10 is: 696.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.10 : 1,620.45 = 464.10 : x
  2. Step 2: Convert to fraction form
    1,080.10/1,620.45 = 464.10/x
  3. Step 3: Cross multiply
    1,080.10x = 1,620.45 × 464.10
  4. Step 4: Simplify right side
    1,080.10x = 752,050.85
  5. Step 5: Solve for x
    x = 752,050.85/1,080.10
  6. Step 6: Final answer
    x = 696.28

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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.