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Finding the Fourth Proportional to 348.95, 520.37 and 305.81

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Solution

The fourth proportional to 348.95, 520.37 and 305.81 is: 456.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.95 : 520.37 = 305.81 : x
  2. Step 2: Convert to fraction form
    348.95/520.37 = 305.81/x
  3. Step 3: Cross multiply
    348.95x = 520.37 × 305.81
  4. Step 4: Simplify right side
    348.95x = 159,134.35
  5. Step 5: Solve for x
    x = 159,134.35/348.95
  6. Step 6: Final answer
    x = 456.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.