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Finding the Fourth Proportional to 631.02, 946.54 and 220.12

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Solution

The fourth proportional to 631.02, 946.54 and 220.12 is: 330.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.02 : 946.54 = 220.12 : x
  2. Step 2: Convert to fraction form
    631.02/946.54 = 220.12/x
  3. Step 3: Cross multiply
    631.02x = 946.54 × 220.12
  4. Step 4: Simplify right side
    631.02x = 208,352.38
  5. Step 5: Solve for x
    x = 208,352.38/631.02
  6. Step 6: Final answer
    x = 330.18

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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.