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Finding the Fourth Proportional to 611.10, 845.51 and 533.70

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Solution

The fourth proportional to 611.10, 845.51 and 533.70 is: 738.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.10 : 845.51 = 533.70 : x
  2. Step 2: Convert to fraction form
    611.10/845.51 = 533.70/x
  3. Step 3: Cross multiply
    611.10x = 845.51 × 533.70
  4. Step 4: Simplify right side
    611.10x = 451,246.02
  5. Step 5: Solve for x
    x = 451,246.02/611.10
  6. Step 6: Final answer
    x = 738.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.