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Finding the Fourth Proportional to 559.47, 839.21 and 235.07

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Solution

The fourth proportional to 559.47, 839.21 and 235.07 is: 352.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.47 : 839.21 = 235.07 : x
  2. Step 2: Convert to fraction form
    559.47/839.21 = 235.07/x
  3. Step 3: Cross multiply
    559.47x = 839.21 × 235.07
  4. Step 4: Simplify right side
    559.47x = 197,267.72
  5. Step 5: Solve for x
    x = 197,267.72/559.47
  6. Step 6: Final answer
    x = 352.60

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Double scale
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Similar ratio
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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.