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Finding the Fourth Proportional to 961.15, 1,441.95 and 303.07

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Solution

The fourth proportional to 961.15, 1,441.95 and 303.07 is: 454.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    961.15 : 1,441.95 = 303.07 : x
  2. Step 2: Convert to fraction form
    961.15/1,441.95 = 303.07/x
  3. Step 3: Cross multiply
    961.15x = 1,441.95 × 303.07
  4. Step 4: Simplify right side
    961.15x = 437,011.79
  5. Step 5: Solve for x
    x = 437,011.79/961.15
  6. Step 6: Final answer
    x = 454.68

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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.