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Finding the Fourth Proportional to 611.50, 917.29 and 246.53

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Solution

The fourth proportional to 611.50, 917.29 and 246.53 is: 369.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.50 : 917.29 = 246.53 : x
  2. Step 2: Convert to fraction form
    611.50/917.29 = 246.53/x
  3. Step 3: Cross multiply
    611.50x = 917.29 × 246.53
  4. Step 4: Simplify right side
    611.50x = 226,139.50
  5. Step 5: Solve for x
    x = 226,139.50/611.50
  6. Step 6: Final answer
    x = 369.81

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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.