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Finding the Fourth Proportional to 302.45, 455.64 and 298.67

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Solution

The fourth proportional to 302.45, 455.64 and 298.67 is: 449.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.45 : 455.64 = 298.67 : x
  2. Step 2: Convert to fraction form
    302.45/455.64 = 298.67/x
  3. Step 3: Cross multiply
    302.45x = 455.64 × 298.67
  4. Step 4: Simplify right side
    302.45x = 136,082.60
  5. Step 5: Solve for x
    x = 136,082.60/302.45
  6. Step 6: Final answer
    x = 449.94

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.