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Finding the Fourth Proportional to 654.38, 903.07 and 359.65

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Solution

The fourth proportional to 654.38, 903.07 and 359.65 is: 496.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.38 : 903.07 = 359.65 : x
  2. Step 2: Convert to fraction form
    654.38/903.07 = 359.65/x
  3. Step 3: Cross multiply
    654.38x = 903.07 × 359.65
  4. Step 4: Simplify right side
    654.38x = 324,789.18
  5. Step 5: Solve for x
    x = 324,789.18/654.38
  6. Step 6: Final answer
    x = 496.33

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1.5x scale

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.