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Finding the Fourth Proportional to 846.45, 1,168.24 and 548.05

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Solution

The fourth proportional to 846.45, 1,168.24 and 548.05 is: 756.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.45 : 1,168.24 = 548.05 : x
  2. Step 2: Convert to fraction form
    846.45/1,168.24 = 548.05/x
  3. Step 3: Cross multiply
    846.45x = 1,168.24 × 548.05
  4. Step 4: Simplify right side
    846.45x = 640,253.93
  5. Step 5: Solve for x
    x = 640,253.93/846.45
  6. Step 6: Final answer
    x = 756.40

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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.