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Finding the Fourth Proportional to 629.10, 942.18 and 455.04

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Solution

The fourth proportional to 629.10, 942.18 and 455.04 is: 681.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.10 : 942.18 = 455.04 : x
  2. Step 2: Convert to fraction form
    629.10/942.18 = 455.04/x
  3. Step 3: Cross multiply
    629.10x = 942.18 × 455.04
  4. Step 4: Simplify right side
    629.10x = 428,729.59
  5. Step 5: Solve for x
    x = 428,729.59/629.10
  6. Step 6: Final answer
    x = 681.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.