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Finding the Fourth Proportional to 248.12, 370.41 and 207.64

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Solution

The fourth proportional to 248.12, 370.41 and 207.64 is: 309.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.12 : 370.41 = 207.64 : x
  2. Step 2: Convert to fraction form
    248.12/370.41 = 207.64/x
  3. Step 3: Cross multiply
    248.12x = 370.41 × 207.64
  4. Step 4: Simplify right side
    248.12x = 76,911.93
  5. Step 5: Solve for x
    x = 76,911.93/248.12
  6. Step 6: Final answer
    x = 309.98

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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.