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Finding the Fourth Proportional to 648.56, 894.92 and 368.81

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Solution

The fourth proportional to 648.56, 894.92 and 368.81 is: 508.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.56 : 894.92 = 368.81 : x
  2. Step 2: Convert to fraction form
    648.56/894.92 = 368.81/x
  3. Step 3: Cross multiply
    648.56x = 894.92 × 368.81
  4. Step 4: Simplify right side
    648.56x = 330,052.48
  5. Step 5: Solve for x
    x = 330,052.48/648.56
  6. Step 6: Final answer
    x = 508.90

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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.