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Finding the Fourth Proportional to 255.84, 382.90 and 164.60

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Solution

The fourth proportional to 255.84, 382.90 and 164.60 is: 246.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.84 : 382.90 = 164.60 : x
  2. Step 2: Convert to fraction form
    255.84/382.90 = 164.60/x
  3. Step 3: Cross multiply
    255.84x = 382.90 × 164.60
  4. Step 4: Simplify right side
    255.84x = 63,025.34
  5. Step 5: Solve for x
    x = 63,025.34/255.84
  6. Step 6: Final answer
    x = 246.35

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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.