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Finding the Fourth Proportional to 665.47, 919.25 and 603.37

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Solution

The fourth proportional to 665.47, 919.25 and 603.37 is: 833.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.47 : 919.25 = 603.37 : x
  2. Step 2: Convert to fraction form
    665.47/919.25 = 603.37/x
  3. Step 3: Cross multiply
    665.47x = 919.25 × 603.37
  4. Step 4: Simplify right side
    665.47x = 554,647.87
  5. Step 5: Solve for x
    x = 554,647.87/665.47
  6. Step 6: Final answer
    x = 833.47

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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.