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Finding the Fourth Proportional to 255.60, 383.04 and 191.16

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Solution

The fourth proportional to 255.60, 383.04 and 191.16 is: 286.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.60 : 383.04 = 191.16 : x
  2. Step 2: Convert to fraction form
    255.60/383.04 = 191.16/x
  3. Step 3: Cross multiply
    255.60x = 383.04 × 191.16
  4. Step 4: Simplify right side
    255.60x = 73,221.93
  5. Step 5: Solve for x
    x = 73,221.93/255.60
  6. Step 6: Final answer
    x = 286.47

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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.