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Finding the Fourth Proportional to 255.46, 383.47 and 183.64

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Solution

The fourth proportional to 255.46, 383.47 and 183.64 is: 275.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.46 : 383.47 = 183.64 : x
  2. Step 2: Convert to fraction form
    255.46/383.47 = 183.64/x
  3. Step 3: Cross multiply
    255.46x = 383.47 × 183.64
  4. Step 4: Simplify right side
    255.46x = 70,420.43
  5. Step 5: Solve for x
    x = 70,420.43/255.46
  6. Step 6: Final answer
    x = 275.66

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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.