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Finding the Fourth Proportional to 372.90, 514.62 and 207.12

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Solution

The fourth proportional to 372.90, 514.62 and 207.12 is: 285.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.90 : 514.62 = 207.12 : x
  2. Step 2: Convert to fraction form
    372.90/514.62 = 207.12/x
  3. Step 3: Cross multiply
    372.90x = 514.62 × 207.12
  4. Step 4: Simplify right side
    372.90x = 106,588.09
  5. Step 5: Solve for x
    x = 106,588.09/372.90
  6. Step 6: Final answer
    x = 285.84

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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.