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Finding the Fourth Proportional to 638.67, 958.29 and 583.98

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Solution

The fourth proportional to 638.67, 958.29 and 583.98 is: 876.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    638.67 : 958.29 = 583.98 : x
  2. Step 2: Convert to fraction form
    638.67/958.29 = 583.98/x
  3. Step 3: Cross multiply
    638.67x = 958.29 × 583.98
  4. Step 4: Simplify right side
    638.67x = 559,622.19
  5. Step 5: Solve for x
    x = 559,622.19/638.67
  6. Step 6: Final answer
    x = 876.23

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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.