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Finding the Fourth Proportional to 679.52, 937.77 and 384.88

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Solution

The fourth proportional to 679.52, 937.77 and 384.88 is: 531.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.52 : 937.77 = 384.88 : x
  2. Step 2: Convert to fraction form
    679.52/937.77 = 384.88/x
  3. Step 3: Cross multiply
    679.52x = 937.77 × 384.88
  4. Step 4: Simplify right side
    679.52x = 360,928.92
  5. Step 5: Solve for x
    x = 360,928.92/679.52
  6. Step 6: Final answer
    x = 531.15

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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.