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Finding the Fourth Proportional to 648.24, 894.12 and 440.88

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Solution

The fourth proportional to 648.24, 894.12 and 440.88 is: 608.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.24 : 894.12 = 440.88 : x
  2. Step 2: Convert to fraction form
    648.24/894.12 = 440.88/x
  3. Step 3: Cross multiply
    648.24x = 894.12 × 440.88
  4. Step 4: Simplify right side
    648.24x = 394,199.63
  5. Step 5: Solve for x
    x = 394,199.63/648.24
  6. Step 6: Final answer
    x = 608.11

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1.5x scale

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.