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Finding the Fourth Proportional to 629.58, 940.64 and 608.05

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Solution

The fourth proportional to 629.58, 940.64 and 608.05 is: 908.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.58 : 940.64 = 608.05 : x
  2. Step 2: Convert to fraction form
    629.58/940.64 = 608.05/x
  3. Step 3: Cross multiply
    629.58x = 940.64 × 608.05
  4. Step 4: Simplify right side
    629.58x = 571,956.15
  5. Step 5: Solve for x
    x = 571,956.15/629.58
  6. Step 6: Final answer
    x = 908.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.