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Finding the Fourth Proportional to 250.64, 345.86 and 145.74

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Solution

The fourth proportional to 250.64, 345.86 and 145.74 is: 201.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.64 : 345.86 = 145.74 : x
  2. Step 2: Convert to fraction form
    250.64/345.86 = 145.74/x
  3. Step 3: Cross multiply
    250.64x = 345.86 × 145.74
  4. Step 4: Simplify right side
    250.64x = 50,405.64
  5. Step 5: Solve for x
    x = 50,405.64/250.64
  6. Step 6: Final answer
    x = 201.11

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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.