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Finding the Fourth Proportional to 772.05, 1,157.88 and 333.46

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Solution

The fourth proportional to 772.05, 1,157.88 and 333.46 is: 500.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    772.05 : 1,157.88 = 333.46 : x
  2. Step 2: Convert to fraction form
    772.05/1,157.88 = 333.46/x
  3. Step 3: Cross multiply
    772.05x = 1,157.88 × 333.46
  4. Step 4: Simplify right side
    772.05x = 386,102.52
  5. Step 5: Solve for x
    x = 386,102.52/772.05
  6. Step 6: Final answer
    x = 500.10

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1.5x scale

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.