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Finding the Fourth Proportional to 607.56, 911.18 and 261.06

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Solution

The fourth proportional to 607.56, 911.18 and 261.06 is: 391.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.56 : 911.18 = 261.06 : x
  2. Step 2: Convert to fraction form
    607.56/911.18 = 261.06/x
  3. Step 3: Cross multiply
    607.56x = 911.18 × 261.06
  4. Step 4: Simplify right side
    607.56x = 237,872.65
  5. Step 5: Solve for x
    x = 237,872.65/607.56
  6. Step 6: Final answer
    x = 391.52

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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.