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Finding the Fourth Proportional to 255.10, 352.53 and 185.40

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Solution

The fourth proportional to 255.10, 352.53 and 185.40 is: 256.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.10 : 352.53 = 185.40 : x
  2. Step 2: Convert to fraction form
    255.10/352.53 = 185.40/x
  3. Step 3: Cross multiply
    255.10x = 352.53 × 185.40
  4. Step 4: Simplify right side
    255.10x = 65,359.06
  5. Step 5: Solve for x
    x = 65,359.06/255.10
  6. Step 6: Final answer
    x = 256.21

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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.