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Finding the Fourth Proportional to 668.04, 921.84 and 435.12

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Solution

The fourth proportional to 668.04, 921.84 and 435.12 is: 600.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.04 : 921.84 = 435.12 : x
  2. Step 2: Convert to fraction form
    668.04/921.84 = 435.12/x
  3. Step 3: Cross multiply
    668.04x = 921.84 × 435.12
  4. Step 4: Simplify right side
    668.04x = 401,111.02
  5. Step 5: Solve for x
    x = 401,111.02/668.04
  6. Step 6: Final answer
    x = 600.43

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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.