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Finding the Fourth Proportional to 679.79, 937.98 and 430.92

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Solution

The fourth proportional to 679.79, 937.98 and 430.92 is: 594.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.79 : 937.98 = 430.92 : x
  2. Step 2: Convert to fraction form
    679.79/937.98 = 430.92/x
  3. Step 3: Cross multiply
    679.79x = 937.98 × 430.92
  4. Step 4: Simplify right side
    679.79x = 404,194.34
  5. Step 5: Solve for x
    x = 404,194.34/679.79
  6. Step 6: Final answer
    x = 594.58

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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.