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Finding the Fourth Proportional to 807.14, 1,113.58 and 558.37

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Solution

The fourth proportional to 807.14, 1,113.58 and 558.37 is: 770.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    807.14 : 1,113.58 = 558.37 : x
  2. Step 2: Convert to fraction form
    807.14/1,113.58 = 558.37/x
  3. Step 3: Cross multiply
    807.14x = 1,113.58 × 558.37
  4. Step 4: Simplify right side
    807.14x = 621,789.66
  5. Step 5: Solve for x
    x = 621,789.66/807.14
  6. Step 6: Final answer
    x = 770.36

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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.