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Finding the Fourth Proportional to 250.72, 345.58 and 185.12

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Solution

The fourth proportional to 250.72, 345.58 and 185.12 is: 255.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.72 : 345.58 = 185.12 : x
  2. Step 2: Convert to fraction form
    250.72/345.58 = 185.12/x
  3. Step 3: Cross multiply
    250.72x = 345.58 × 185.12
  4. Step 4: Simplify right side
    250.72x = 63,973.77
  5. Step 5: Solve for x
    x = 63,973.77/250.72
  6. Step 6: Final answer
    x = 255.16

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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.