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Finding the Fourth Proportional to 583.54, 874.88 and 258.72

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Solution

The fourth proportional to 583.54, 874.88 and 258.72 is: 387.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.54 : 874.88 = 258.72 : x
  2. Step 2: Convert to fraction form
    583.54/874.88 = 258.72/x
  3. Step 3: Cross multiply
    583.54x = 874.88 × 258.72
  4. Step 4: Simplify right side
    583.54x = 226,348.95
  5. Step 5: Solve for x
    x = 226,348.95/583.54
  6. Step 6: Final answer
    x = 387.89

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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.