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Finding the Fourth Proportional to 968.75, 1,336.88 and 549.10

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Solution

The fourth proportional to 968.75, 1,336.88 and 549.10 is: 757.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.75 : 1,336.88 = 549.10 : x
  2. Step 2: Convert to fraction form
    968.75/1,336.88 = 549.10/x
  3. Step 3: Cross multiply
    968.75x = 1,336.88 × 549.10
  4. Step 4: Simplify right side
    968.75x = 734,078.84
  5. Step 5: Solve for x
    x = 734,078.84/968.75
  6. Step 6: Final answer
    x = 757.76

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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.