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Finding the Fourth Proportional to 629.38, 939.48 and 583.06

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Solution

The fourth proportional to 629.38, 939.48 and 583.06 is: 870.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.38 : 939.48 = 583.06 : x
  2. Step 2: Convert to fraction form
    629.38/939.48 = 583.06/x
  3. Step 3: Cross multiply
    629.38x = 939.48 × 583.06
  4. Step 4: Simplify right side
    629.38x = 547,773.21
  5. Step 5: Solve for x
    x = 547,773.21/629.38
  6. Step 6: Final answer
    x = 870.34

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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.