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Finding the Fourth Proportional to 611.52, 917.44 and 322.56

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Solution

The fourth proportional to 611.52, 917.44 and 322.56 is: 483.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.52 : 917.44 = 322.56 : x
  2. Step 2: Convert to fraction form
    611.52/917.44 = 322.56/x
  3. Step 3: Cross multiply
    611.52x = 917.44 × 322.56
  4. Step 4: Simplify right side
    611.52x = 295,929.45
  5. Step 5: Solve for x
    x = 295,929.45/611.52
  6. Step 6: Final answer
    x = 483.92

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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.