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Finding the Fourth Proportional to 183.95, 253.78 and 113.93

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Solution

The fourth proportional to 183.95, 253.78 and 113.93 is: 157.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.95 : 253.78 = 113.93 : x
  2. Step 2: Convert to fraction form
    183.95/253.78 = 113.93/x
  3. Step 3: Cross multiply
    183.95x = 253.78 × 113.93
  4. Step 4: Simplify right side
    183.95x = 28,913.24
  5. Step 5: Solve for x
    x = 28,913.24/183.95
  6. Step 6: Final answer
    x = 157.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.