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Finding the Fourth Proportional to 1,376.73, 2,064.89 and 452.32

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Solution

The fourth proportional to 1,376.73, 2,064.89 and 452.32 is: 678.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,376.73 : 2,064.89 = 452.32 : x
  2. Step 2: Convert to fraction form
    1,376.73/2,064.89 = 452.32/x
  3. Step 3: Cross multiply
    1,376.73x = 2,064.89 × 452.32
  4. Step 4: Simplify right side
    1,376.73x = 933,995.72
  5. Step 5: Solve for x
    x = 933,995.72/1,376.73
  6. Step 6: Final answer
    x = 678.42

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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.