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Finding the Fourth Proportional to 511.74, 766.86 and 303.30

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Solution

The fourth proportional to 511.74, 766.86 and 303.30 is: 454.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.74 : 766.86 = 303.30 : x
  2. Step 2: Convert to fraction form
    511.74/766.86 = 303.30/x
  3. Step 3: Cross multiply
    511.74x = 766.86 × 303.30
  4. Step 4: Simplify right side
    511.74x = 232,588.64
  5. Step 5: Solve for x
    x = 232,588.64/511.74
  6. Step 6: Final answer
    x = 454.51

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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.