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Finding the Fourth Proportional to 648.26, 894.66 and 427.66

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Solution

The fourth proportional to 648.26, 894.66 and 427.66 is: 590.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.26 : 894.66 = 427.66 : x
  2. Step 2: Convert to fraction form
    648.26/894.66 = 427.66/x
  3. Step 3: Cross multiply
    648.26x = 894.66 × 427.66
  4. Step 4: Simplify right side
    648.26x = 382,610.30
  5. Step 5: Solve for x
    x = 382,610.30/648.26
  6. Step 6: Final answer
    x = 590.21

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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.