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Finding the Fourth Proportional to 583.10, 873.84 and 438.65

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Solution

The fourth proportional to 583.10, 873.84 and 438.65 is: 657.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.10 : 873.84 = 438.65 : x
  2. Step 2: Convert to fraction form
    583.10/873.84 = 438.65/x
  3. Step 3: Cross multiply
    583.10x = 873.84 × 438.65
  4. Step 4: Simplify right side
    583.10x = 383,309.92
  5. Step 5: Solve for x
    x = 383,309.92/583.10
  6. Step 6: Final answer
    x = 657.37

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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.