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Finding the Fourth Proportional to 183.85, 253.50 and 155.79

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Solution

The fourth proportional to 183.85, 253.50 and 155.79 is: 214.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.85 : 253.50 = 155.79 : x
  2. Step 2: Convert to fraction form
    183.85/253.50 = 155.79/x
  3. Step 3: Cross multiply
    183.85x = 253.50 × 155.79
  4. Step 4: Simplify right side
    183.85x = 39,492.18
  5. Step 5: Solve for x
    x = 39,492.18/183.85
  6. Step 6: Final answer
    x = 214.80

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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.