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Finding the Fourth Proportional to 679.11, 937.14 and 384.43

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Solution

The fourth proportional to 679.11, 937.14 and 384.43 is: 530.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.11 : 937.14 = 384.43 : x
  2. Step 2: Convert to fraction form
    679.11/937.14 = 384.43/x
  3. Step 3: Cross multiply
    679.11x = 937.14 × 384.43
  4. Step 4: Simplify right side
    679.11x = 360,264.73
  5. Step 5: Solve for x
    x = 360,264.73/679.11
  6. Step 6: Final answer
    x = 530.50

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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.