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Finding the Fourth Proportional to 648.25, 894.61 and 368.50

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Solution

The fourth proportional to 648.25, 894.61 and 368.50 is: 508.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.25 : 894.61 = 368.50 : x
  2. Step 2: Convert to fraction form
    648.25/894.61 = 368.50/x
  3. Step 3: Cross multiply
    648.25x = 894.61 × 368.50
  4. Step 4: Simplify right side
    648.25x = 329,663.79
  5. Step 5: Solve for x
    x = 329,663.79/648.25
  6. Step 6: Final answer
    x = 508.54

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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.