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Finding the Fourth Proportional to 585.10, 877.31 and 255.90

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Solution

The fourth proportional to 585.10, 877.31 and 255.90 is: 383.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.10 : 877.31 = 255.90 : x
  2. Step 2: Convert to fraction form
    585.10/877.31 = 255.90/x
  3. Step 3: Cross multiply
    585.10x = 877.31 × 255.90
  4. Step 4: Simplify right side
    585.10x = 224,503.63
  5. Step 5: Solve for x
    x = 224,503.63/585.10
  6. Step 6: Final answer
    x = 383.70

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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.