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Finding the Fourth Proportional to 583.11, 874.86 and 258.70

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Solution

The fourth proportional to 583.11, 874.86 and 258.70 is: 388.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.11 : 874.86 = 258.70 : x
  2. Step 2: Convert to fraction form
    583.11/874.86 = 258.70/x
  3. Step 3: Cross multiply
    583.11x = 874.86 × 258.70
  4. Step 4: Simplify right side
    583.11x = 226,329.44
  5. Step 5: Solve for x
    x = 226,329.44/583.11
  6. Step 6: Final answer
    x = 388.14

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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.