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Finding the Fourth Proportional to 305.10, 456.84 and 268.92

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Solution

The fourth proportional to 305.10, 456.84 and 268.92 is: 402.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.10 : 456.84 = 268.92 : x
  2. Step 2: Convert to fraction form
    305.10/456.84 = 268.92/x
  3. Step 3: Cross multiply
    305.10x = 456.84 × 268.92
  4. Step 4: Simplify right side
    305.10x = 122,853.41
  5. Step 5: Solve for x
    x = 122,853.41/305.10
  6. Step 6: Final answer
    x = 402.67

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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.