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Finding the Fourth Proportional to 250.78, 374.05 and 243.08

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Solution

The fourth proportional to 250.78, 374.05 and 243.08 is: 362.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.78 : 374.05 = 243.08 : x
  2. Step 2: Convert to fraction form
    250.78/374.05 = 243.08/x
  3. Step 3: Cross multiply
    250.78x = 374.05 × 243.08
  4. Step 4: Simplify right side
    250.78x = 90,924.07
  5. Step 5: Solve for x
    x = 90,924.07/250.78
  6. Step 6: Final answer
    x = 362.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.