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Finding the Fourth Proportional to 255.56, 383.35 and 63.19

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Solution

The fourth proportional to 255.56, 383.35 and 63.19 is: 94.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.56 : 383.35 = 63.19 : x
  2. Step 2: Convert to fraction form
    255.56/383.35 = 63.19/x
  3. Step 3: Cross multiply
    255.56x = 383.35 × 63.19
  4. Step 4: Simplify right side
    255.56x = 24,222.77
  5. Step 5: Solve for x
    x = 24,222.77/255.56
  6. Step 6: Final answer
    x = 94.78

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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.