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Finding the Fourth Proportional to 670.81, 925.70 and 376.11

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Solution

The fourth proportional to 670.81, 925.70 and 376.11 is: 519.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.81 : 925.70 = 376.11 : x
  2. Step 2: Convert to fraction form
    670.81/925.70 = 376.11/x
  3. Step 3: Cross multiply
    670.81x = 925.70 × 376.11
  4. Step 4: Simplify right side
    670.81x = 348,165.03
  5. Step 5: Solve for x
    x = 348,165.03/670.81
  6. Step 6: Final answer
    x = 519.02

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.