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Finding the Fourth Proportional to 348.60, 520.55 and 303.06

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Solution

The fourth proportional to 348.60, 520.55 and 303.06 is: 452.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.60 : 520.55 = 303.06 : x
  2. Step 2: Convert to fraction form
    348.60/520.55 = 303.06/x
  3. Step 3: Cross multiply
    348.60x = 520.55 × 303.06
  4. Step 4: Simplify right side
    348.60x = 157,757.88
  5. Step 5: Solve for x
    x = 157,757.88/348.60
  6. Step 6: Final answer
    x = 452.55

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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.