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Finding the Fourth Proportional to 94.99, 130.80 and 94.72

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Solution

The fourth proportional to 94.99, 130.80 and 94.72 is: 130.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.99 : 130.80 = 94.72 : x
  2. Step 2: Convert to fraction form
    94.99/130.80 = 94.72/x
  3. Step 3: Cross multiply
    94.99x = 130.80 × 94.72
  4. Step 4: Simplify right side
    94.99x = 12,389.38
  5. Step 5: Solve for x
    x = 12,389.38/94.99
  6. Step 6: Final answer
    x = 130.43

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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.