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Finding the Fourth Proportional to 630.98, 946.60 and 220.13

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Solution

The fourth proportional to 630.98, 946.60 and 220.13 is: 330.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.98 : 946.60 = 220.13 : x
  2. Step 2: Convert to fraction form
    630.98/946.60 = 220.13/x
  3. Step 3: Cross multiply
    630.98x = 946.60 × 220.13
  4. Step 4: Simplify right side
    630.98x = 208,376.87
  5. Step 5: Solve for x
    x = 208,376.87/630.98
  6. Step 6: Final answer
    x = 330.24

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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.