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Finding the Fourth Proportional to 2,261.31, 3,392.00 and 618.02

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Solution

The fourth proportional to 2,261.31, 3,392.00 and 618.02 is: 927.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.31 : 3,392.00 = 618.02 : x
  2. Step 2: Convert to fraction form
    2,261.31/3,392.00 = 618.02/x
  3. Step 3: Cross multiply
    2,261.31x = 3,392.00 × 618.02
  4. Step 4: Simplify right side
    2,261.31x = 2,096,303.79
  5. Step 5: Solve for x
    x = 2,096,303.79/2,261.31
  6. Step 6: Final answer
    x = 927.03

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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.