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Finding the Fourth Proportional to 294.55, 441.85 and 89.11

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Solution

The fourth proportional to 294.55, 441.85 and 89.11 is: 133.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.55 : 441.85 = 89.11 : x
  2. Step 2: Convert to fraction form
    294.55/441.85 = 89.11/x
  3. Step 3: Cross multiply
    294.55x = 441.85 × 89.11
  4. Step 4: Simplify right side
    294.55x = 39,373.25
  5. Step 5: Solve for x
    x = 39,373.25/294.55
  6. Step 6: Final answer
    x = 133.67

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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.