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Finding the Fourth Proportional to 629.93, 943.38 and 613.53

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Solution

The fourth proportional to 629.93, 943.38 and 613.53 is: 918.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.93 : 943.38 = 613.53 : x
  2. Step 2: Convert to fraction form
    629.93/943.38 = 613.53/x
  3. Step 3: Cross multiply
    629.93x = 943.38 × 613.53
  4. Step 4: Simplify right side
    629.93x = 578,791.93
  5. Step 5: Solve for x
    x = 578,791.93/629.93
  6. Step 6: Final answer
    x = 918.82

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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.