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Finding the Fourth Proportional to 585.35, 878.06 and 260.63

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Solution

The fourth proportional to 585.35, 878.06 and 260.63 is: 390.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.35 : 878.06 = 260.63 : x
  2. Step 2: Convert to fraction form
    585.35/878.06 = 260.63/x
  3. Step 3: Cross multiply
    585.35x = 878.06 × 260.63
  4. Step 4: Simplify right side
    585.35x = 228,845.04
  5. Step 5: Solve for x
    x = 228,845.04/585.35
  6. Step 6: Final answer
    x = 390.96

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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.