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Finding the Fourth Proportional to 944.99, 1,411.11 and 771.99

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Solution

The fourth proportional to 944.99, 1,411.11 and 771.99 is: 1,152.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.99 : 1,411.11 = 771.99 : x
  2. Step 2: Convert to fraction form
    944.99/1,411.11 = 771.99/x
  3. Step 3: Cross multiply
    944.99x = 1,411.11 × 771.99
  4. Step 4: Simplify right side
    944.99x = 1,089,362.81
  5. Step 5: Solve for x
    x = 1,089,362.81/944.99
  6. Step 6: Final answer
    x = 1,152.78

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1.5x scale

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.