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Finding the Fourth Proportional to 255.99, 383.89 and 93.63

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Solution

The fourth proportional to 255.99, 383.89 and 93.63 is: 140.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.99 : 383.89 = 93.63 : x
  2. Step 2: Convert to fraction form
    255.99/383.89 = 93.63/x
  3. Step 3: Cross multiply
    255.99x = 383.89 × 93.63
  4. Step 4: Simplify right side
    255.99x = 35,941.47
  5. Step 5: Solve for x
    x = 35,941.47/255.99
  6. Step 6: Final answer
    x = 140.40

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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.