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Finding the Fourth Proportional to 662.60, 912.83 and 549.88

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Solution

The fourth proportional to 662.60, 912.83 and 549.88 is: 757.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.60 : 912.83 = 549.88 : x
  2. Step 2: Convert to fraction form
    662.60/912.83 = 549.88/x
  3. Step 3: Cross multiply
    662.60x = 912.83 × 549.88
  4. Step 4: Simplify right side
    662.60x = 501,941.93
  5. Step 5: Solve for x
    x = 501,941.93/662.60
  6. Step 6: Final answer
    x = 757.53

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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.