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Finding the Fourth Proportional to 679.02, 934.56 and 482.19

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Solution

The fourth proportional to 679.02, 934.56 and 482.19 is: 663.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.02 : 934.56 = 482.19 : x
  2. Step 2: Convert to fraction form
    679.02/934.56 = 482.19/x
  3. Step 3: Cross multiply
    679.02x = 934.56 × 482.19
  4. Step 4: Simplify right side
    679.02x = 450,635.49
  5. Step 5: Solve for x
    x = 450,635.49/679.02
  6. Step 6: Final answer
    x = 663.66

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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.