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Finding the Fourth Proportional to 665.07, 919.52 and 635.37

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Solution

The fourth proportional to 665.07, 919.52 and 635.37 is: 878.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.07 : 919.52 = 635.37 : x
  2. Step 2: Convert to fraction form
    665.07/919.52 = 635.37/x
  3. Step 3: Cross multiply
    665.07x = 919.52 × 635.37
  4. Step 4: Simplify right side
    665.07x = 584,235.42
  5. Step 5: Solve for x
    x = 584,235.42/665.07
  6. Step 6: Final answer
    x = 878.46

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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.