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Finding the Fourth Proportional to 653.89, 902.33 and 359.15

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Solution

The fourth proportional to 653.89, 902.33 and 359.15 is: 495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.89 : 902.33 = 359.15 : x
  2. Step 2: Convert to fraction form
    653.89/902.33 = 359.15/x
  3. Step 3: Cross multiply
    653.89x = 902.33 × 359.15
  4. Step 4: Simplify right side
    653.89x = 324,065.51
  5. Step 5: Solve for x
    x = 324,065.51/653.89
  6. Step 6: Final answer
    x = 495.60

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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.