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Finding the Fourth Proportional to 60.19, 90.26 and 21.67

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Solution

The fourth proportional to 60.19, 90.26 and 21.67 is: 32.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.19 : 90.26 = 21.67 : x
  2. Step 2: Convert to fraction form
    60.19/90.26 = 21.67/x
  3. Step 3: Cross multiply
    60.19x = 90.26 × 21.67
  4. Step 4: Simplify right side
    60.19x = 1,955.60
  5. Step 5: Solve for x
    x = 1,955.60/60.19
  6. Step 6: Final answer
    x = 32.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.