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Finding the Fourth Proportional to 941.18, 1,298.92 and 548.18

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Solution

The fourth proportional to 941.18, 1,298.92 and 548.18 is: 756.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.18 : 1,298.92 = 548.18 : x
  2. Step 2: Convert to fraction form
    941.18/1,298.92 = 548.18/x
  3. Step 3: Cross multiply
    941.18x = 1,298.92 × 548.18
  4. Step 4: Simplify right side
    941.18x = 712,041.97
  5. Step 5: Solve for x
    x = 712,041.97/941.18
  6. Step 6: Final answer
    x = 756.54

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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.