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Finding the Fourth Proportional to 645.55, 963.25 and 606.37

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Solution

The fourth proportional to 645.55, 963.25 and 606.37 is: 904.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.55 : 963.25 = 606.37 : x
  2. Step 2: Convert to fraction form
    645.55/963.25 = 606.37/x
  3. Step 3: Cross multiply
    645.55x = 963.25 × 606.37
  4. Step 4: Simplify right side
    645.55x = 584,085.90
  5. Step 5: Solve for x
    x = 584,085.90/645.55
  6. Step 6: Final answer
    x = 904.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.