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Finding the Fourth Proportional to 60.26, 83.19 and 56.91

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Solution

The fourth proportional to 60.26, 83.19 and 56.91 is: 78.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.26 : 83.19 = 56.91 : x
  2. Step 2: Convert to fraction form
    60.26/83.19 = 56.91/x
  3. Step 3: Cross multiply
    60.26x = 83.19 × 56.91
  4. Step 4: Simplify right side
    60.26x = 4,734.39
  5. Step 5: Solve for x
    x = 4,734.39/60.26
  6. Step 6: Final answer
    x = 78.57

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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.