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Finding the Fourth Proportional to 700.63, 1,049.72 and 330.05

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Solution

The fourth proportional to 700.63, 1,049.72 and 330.05 is: 494.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.63 : 1,049.72 = 330.05 : x
  2. Step 2: Convert to fraction form
    700.63/1,049.72 = 330.05/x
  3. Step 3: Cross multiply
    700.63x = 1,049.72 × 330.05
  4. Step 4: Simplify right side
    700.63x = 346,460.09
  5. Step 5: Solve for x
    x = 346,460.09/700.63
  6. Step 6: Final answer
    x = 494.50

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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.