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Finding the Fourth Proportional to 58.40, 80.61 and 43.67

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Solution

The fourth proportional to 58.40, 80.61 and 43.67 is: 60.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.40 : 80.61 = 43.67 : x
  2. Step 2: Convert to fraction form
    58.40/80.61 = 43.67/x
  3. Step 3: Cross multiply
    58.40x = 80.61 × 43.67
  4. Step 4: Simplify right side
    58.40x = 3,519.84
  5. Step 5: Solve for x
    x = 3,519.84/58.40
  6. Step 6: Final answer
    x = 60.27

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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.