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Finding the Fourth Proportional to 559.18, 771.12 and 434.62

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Solution

The fourth proportional to 559.18, 771.12 and 434.62 is: 599.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.18 : 771.12 = 434.62 : x
  2. Step 2: Convert to fraction form
    559.18/771.12 = 434.62/x
  3. Step 3: Cross multiply
    559.18x = 771.12 × 434.62
  4. Step 4: Simplify right side
    559.18x = 335,144.17
  5. Step 5: Solve for x
    x = 335,144.17/559.18
  6. Step 6: Final answer
    x = 599.35

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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.