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Finding the Fourth Proportional to 555.77, 834.74 and 459.61

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Solution

The fourth proportional to 555.77, 834.74 and 459.61 is: 690.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.77 : 834.74 = 459.61 : x
  2. Step 2: Convert to fraction form
    555.77/834.74 = 459.61/x
  3. Step 3: Cross multiply
    555.77x = 834.74 × 459.61
  4. Step 4: Simplify right side
    555.77x = 383,654.85
  5. Step 5: Solve for x
    x = 383,654.85/555.77
  6. Step 6: Final answer
    x = 690.31

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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.