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Finding the Fourth Proportional to 94.98, 130.99 and 56.13

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Solution

The fourth proportional to 94.98, 130.99 and 56.13 is: 77.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.98 : 130.99 = 56.13 : x
  2. Step 2: Convert to fraction form
    94.98/130.99 = 56.13/x
  3. Step 3: Cross multiply
    94.98x = 130.99 × 56.13
  4. Step 4: Simplify right side
    94.98x = 7,352.47
  5. Step 5: Solve for x
    x = 7,352.47/94.98
  6. Step 6: Final answer
    x = 77.41

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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.