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Finding the Fourth Proportional to 255.58, 384 and 164.50

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Solution

The fourth proportional to 255.58, 384 and 164.50 is: 247.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.58 : 384 = 164.50 : x
  2. Step 2: Convert to fraction form
    255.58/384 = 164.50/x
  3. Step 3: Cross multiply
    255.58x = 384 × 164.50
  4. Step 4: Simplify right side
    255.58x = 63,168
  5. Step 5: Solve for x
    x = 63,168/255.58
  6. Step 6: Final answer
    x = 247.16

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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.