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Finding the Fourth Proportional to 654.28, 902.85 and 359.47

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Solution

The fourth proportional to 654.28, 902.85 and 359.47 is: 496.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.28 : 902.85 = 359.47 : x
  2. Step 2: Convert to fraction form
    654.28/902.85 = 359.47/x
  3. Step 3: Cross multiply
    654.28x = 902.85 × 359.47
  4. Step 4: Simplify right side
    654.28x = 324,547.27
  5. Step 5: Solve for x
    x = 324,547.27/654.28
  6. Step 6: Final answer
    x = 496.04

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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.