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Finding the Fourth Proportional to 680.24, 939 and 473.36

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Solution

The fourth proportional to 680.24, 939 and 473.36 is: 653.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    680.24 : 939 = 473.36 : x
  2. Step 2: Convert to fraction form
    680.24/939 = 473.36/x
  3. Step 3: Cross multiply
    680.24x = 939 × 473.36
  4. Step 4: Simplify right side
    680.24x = 444,485.04
  5. Step 5: Solve for x
    x = 444,485.04/680.24
  6. Step 6: Final answer
    x = 653.42

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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.