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Finding the Fourth Proportional to 949.77, 1,424.66 and 511.02

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Solution

The fourth proportional to 949.77, 1,424.66 and 511.02 is: 766.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.77 : 1,424.66 = 511.02 : x
  2. Step 2: Convert to fraction form
    949.77/1,424.66 = 511.02/x
  3. Step 3: Cross multiply
    949.77x = 1,424.66 × 511.02
  4. Step 4: Simplify right side
    949.77x = 728,027.20
  5. Step 5: Solve for x
    x = 728,027.20/949.77
  6. Step 6: Final answer
    x = 766.53

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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.