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Finding the Fourth Proportional to 583.78, 875.70 and 255.10

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Solution

The fourth proportional to 583.78, 875.70 and 255.10 is: 382.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.78 : 875.70 = 255.10 : x
  2. Step 2: Convert to fraction form
    583.78/875.70 = 255.10/x
  3. Step 3: Cross multiply
    583.78x = 875.70 × 255.10
  4. Step 4: Simplify right side
    583.78x = 223,391.07
  5. Step 5: Solve for x
    x = 223,391.07/583.78
  6. Step 6: Final answer
    x = 382.66

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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.