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Finding the Fourth Proportional to 648.24, 976.39 and 603.16

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Solution

The fourth proportional to 648.24, 976.39 and 603.16 is: 908.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.24 : 976.39 = 603.16 : x
  2. Step 2: Convert to fraction form
    648.24/976.39 = 603.16/x
  3. Step 3: Cross multiply
    648.24x = 976.39 × 603.16
  4. Step 4: Simplify right side
    648.24x = 588,919.39
  5. Step 5: Solve for x
    x = 588,919.39/648.24
  6. Step 6: Final answer
    x = 908.49

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.