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Finding the Fourth Proportional to 1,670.56, 2,304.03 and 1,228.30

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Solution

The fourth proportional to 1,670.56, 2,304.03 and 1,228.30 is: 1,694.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670.56 : 2,304.03 = 1,228.30 : x
  2. Step 2: Convert to fraction form
    1,670.56/2,304.03 = 1,228.30/x
  3. Step 3: Cross multiply
    1,670.56x = 2,304.03 × 1,228.30
  4. Step 4: Simplify right side
    1,670.56x = 2,830,040.05
  5. Step 5: Solve for x
    x = 2,830,040.05/1,670.56
  6. Step 6: Final answer
    x = 1,694.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.