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Finding the Fourth Proportional to 54.48, 75.21 and 32.67

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Solution

The fourth proportional to 54.48, 75.21 and 32.67 is: 45.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.48 : 75.21 = 32.67 : x
  2. Step 2: Convert to fraction form
    54.48/75.21 = 32.67/x
  3. Step 3: Cross multiply
    54.48x = 75.21 × 32.67
  4. Step 4: Simplify right side
    54.48x = 2,457.11
  5. Step 5: Solve for x
    x = 2,457.11/54.48
  6. Step 6: Final answer
    x = 45.10

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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.