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Finding the Fourth Proportional to 635.67, 953.51 and 219.18

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Solution

The fourth proportional to 635.67, 953.51 and 219.18 is: 328.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.67 : 953.51 = 219.18 : x
  2. Step 2: Convert to fraction form
    635.67/953.51 = 219.18/x
  3. Step 3: Cross multiply
    635.67x = 953.51 × 219.18
  4. Step 4: Simplify right side
    635.67x = 208,990.32
  5. Step 5: Solve for x
    x = 208,990.32/635.67
  6. Step 6: Final answer
    x = 328.77

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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.