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Finding the Fourth Proportional to 303.35, 455.15 and 130.05

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Solution

The fourth proportional to 303.35, 455.15 and 130.05 is: 195.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.35 : 455.15 = 130.05 : x
  2. Step 2: Convert to fraction form
    303.35/455.15 = 130.05/x
  3. Step 3: Cross multiply
    303.35x = 455.15 × 130.05
  4. Step 4: Simplify right side
    303.35x = 59,191.61
  5. Step 5: Solve for x
    x = 59,191.61/303.35
  6. Step 6: Final answer
    x = 195.13

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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.