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Finding the Fourth Proportional to 670.77, 925.79 and 375.99

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Solution

The fourth proportional to 670.77, 925.79 and 375.99 is: 518.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.77 : 925.79 = 375.99 : x
  2. Step 2: Convert to fraction form
    670.77/925.79 = 375.99/x
  3. Step 3: Cross multiply
    670.77x = 925.79 × 375.99
  4. Step 4: Simplify right side
    670.77x = 348,087.78
  5. Step 5: Solve for x
    x = 348,087.78/670.77
  6. Step 6: Final answer
    x = 518.94

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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.