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Finding the Fourth Proportional to 505.41, 758.11 and 140.19

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Solution

The fourth proportional to 505.41, 758.11 and 140.19 is: 210.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.41 : 758.11 = 140.19 : x
  2. Step 2: Convert to fraction form
    505.41/758.11 = 140.19/x
  3. Step 3: Cross multiply
    505.41x = 758.11 × 140.19
  4. Step 4: Simplify right side
    505.41x = 106,280.99
  5. Step 5: Solve for x
    x = 106,280.99/505.41
  6. Step 6: Final answer
    x = 210.29

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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.