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Finding the Fourth Proportional to 1,449.31, 2,173.51 and 475.19

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Solution

The fourth proportional to 1,449.31, 2,173.51 and 475.19 is: 712.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.31 : 2,173.51 = 475.19 : x
  2. Step 2: Convert to fraction form
    1,449.31/2,173.51 = 475.19/x
  3. Step 3: Cross multiply
    1,449.31x = 2,173.51 × 475.19
  4. Step 4: Simplify right side
    1,449.31x = 1,032,830.22
  5. Step 5: Solve for x
    x = 1,032,830.22/1,449.31
  6. Step 6: Final answer
    x = 712.64

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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.