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Finding the Fourth Proportional to 670.72, 925.62 and 375.99

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Solution

The fourth proportional to 670.72, 925.62 and 375.99 is: 518.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.72 : 925.62 = 375.99 : x
  2. Step 2: Convert to fraction form
    670.72/925.62 = 375.99/x
  3. Step 3: Cross multiply
    670.72x = 925.62 × 375.99
  4. Step 4: Simplify right side
    670.72x = 348,023.86
  5. Step 5: Solve for x
    x = 348,023.86/670.72
  6. Step 6: Final answer
    x = 518.88

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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.