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Finding the Fourth Proportional to 648.04, 894.35 and 386.14

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Solution

The fourth proportional to 648.04, 894.35 and 386.14 is: 532.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.04 : 894.35 = 386.14 : x
  2. Step 2: Convert to fraction form
    648.04/894.35 = 386.14/x
  3. Step 3: Cross multiply
    648.04x = 894.35 × 386.14
  4. Step 4: Simplify right side
    648.04x = 345,344.31
  5. Step 5: Solve for x
    x = 345,344.31/648.04
  6. Step 6: Final answer
    x = 532.91

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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.