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Finding the Fourth Proportional to 799.58, 1,200.09 and 434.63

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Solution

The fourth proportional to 799.58, 1,200.09 and 434.63 is: 652.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.58 : 1,200.09 = 434.63 : x
  2. Step 2: Convert to fraction form
    799.58/1,200.09 = 434.63/x
  3. Step 3: Cross multiply
    799.58x = 1,200.09 × 434.63
  4. Step 4: Simplify right side
    799.58x = 521,595.12
  5. Step 5: Solve for x
    x = 521,595.12/799.58
  6. Step 6: Final answer
    x = 652.34

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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.