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Finding the Fourth Proportional to 58.37, 80.36 and 50.70

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Solution

The fourth proportional to 58.37, 80.36 and 50.70 is: 69.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.37 : 80.36 = 50.70 : x
  2. Step 2: Convert to fraction form
    58.37/80.36 = 50.70/x
  3. Step 3: Cross multiply
    58.37x = 80.36 × 50.70
  4. Step 4: Simplify right side
    58.37x = 4,074.25
  5. Step 5: Solve for x
    x = 4,074.25/58.37
  6. Step 6: Final answer
    x = 69.80

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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.