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Finding the Fourth Proportional to 607.65, 911.39 and 168.93

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Solution

The fourth proportional to 607.65, 911.39 and 168.93 is: 253.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.65 : 911.39 = 168.93 : x
  2. Step 2: Convert to fraction form
    607.65/911.39 = 168.93/x
  3. Step 3: Cross multiply
    607.65x = 911.39 × 168.93
  4. Step 4: Simplify right side
    607.65x = 153,961.11
  5. Step 5: Solve for x
    x = 153,961.11/607.65
  6. Step 6: Final answer
    x = 253.37

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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.