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Finding the Fourth Proportional to 941.98, 1,298.94 and 662.12

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Solution

The fourth proportional to 941.98, 1,298.94 and 662.12 is: 913.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.98 : 1,298.94 = 662.12 : x
  2. Step 2: Convert to fraction form
    941.98/1,298.94 = 662.12/x
  3. Step 3: Cross multiply
    941.98x = 1,298.94 × 662.12
  4. Step 4: Simplify right side
    941.98x = 860,054.15
  5. Step 5: Solve for x
    x = 860,054.15/941.98
  6. Step 6: Final answer
    x = 913.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.