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Finding the Fourth Proportional to 94.72, 130.57 and 68.48

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Solution

The fourth proportional to 94.72, 130.57 and 68.48 is: 94.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.72 : 130.57 = 68.48 : x
  2. Step 2: Convert to fraction form
    94.72/130.57 = 68.48/x
  3. Step 3: Cross multiply
    94.72x = 130.57 × 68.48
  4. Step 4: Simplify right side
    94.72x = 8,941.43
  5. Step 5: Solve for x
    x = 8,941.43/94.72
  6. Step 6: Final answer
    x = 94.40

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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.