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Finding the Fourth Proportional to 1,374.15, 2,061.23 and 552.42

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Solution

The fourth proportional to 1,374.15, 2,061.23 and 552.42 is: 828.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,374.15 : 2,061.23 = 552.42 : x
  2. Step 2: Convert to fraction form
    1,374.15/2,061.23 = 552.42/x
  3. Step 3: Cross multiply
    1,374.15x = 2,061.23 × 552.42
  4. Step 4: Simplify right side
    1,374.15x = 1,138,669.64
  5. Step 5: Solve for x
    x = 1,138,669.64/1,374.15
  6. Step 6: Final answer
    x = 828.64

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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.