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Finding the Fourth Proportional to 1,080.65, 1,620.47 and 464.04

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Solution

The fourth proportional to 1,080.65, 1,620.47 and 464.04 is: 695.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.65 : 1,620.47 = 464.04 : x
  2. Step 2: Convert to fraction form
    1,080.65/1,620.47 = 464.04/x
  3. Step 3: Cross multiply
    1,080.65x = 1,620.47 × 464.04
  4. Step 4: Simplify right side
    1,080.65x = 751,964.06
  5. Step 5: Solve for x
    x = 751,964.06/1,080.65
  6. Step 6: Final answer
    x = 695.84

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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.