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Finding the Fourth Proportional to 585.64, 808.26 and 352.78

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Solution

The fourth proportional to 585.64, 808.26 and 352.78 is: 486.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.64 : 808.26 = 352.78 : x
  2. Step 2: Convert to fraction form
    585.64/808.26 = 352.78/x
  3. Step 3: Cross multiply
    585.64x = 808.26 × 352.78
  4. Step 4: Simplify right side
    585.64x = 285,137.96
  5. Step 5: Solve for x
    x = 285,137.96/585.64
  6. Step 6: Final answer
    x = 486.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.