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Finding the Fourth Proportional to 585.82, 879.15 and 455.50

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Solution

The fourth proportional to 585.82, 879.15 and 455.50 is: 683.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.82 : 879.15 = 455.50 : x
  2. Step 2: Convert to fraction form
    585.82/879.15 = 455.50/x
  3. Step 3: Cross multiply
    585.82x = 879.15 × 455.50
  4. Step 4: Simplify right side
    585.82x = 400,448.43
  5. Step 5: Solve for x
    x = 400,448.43/585.82
  6. Step 6: Final answer
    x = 683.57

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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.