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Finding the Fourth Proportional to 586.85, 878.95 and 455.83

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Solution

The fourth proportional to 586.85, 878.95 and 455.83 is: 682.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.85 : 878.95 = 455.83 : x
  2. Step 2: Convert to fraction form
    586.85/878.95 = 455.83/x
  3. Step 3: Cross multiply
    586.85x = 878.95 × 455.83
  4. Step 4: Simplify right side
    586.85x = 400,650.15
  5. Step 5: Solve for x
    x = 400,650.15/586.85
  6. Step 6: Final answer
    x = 682.72

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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.