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Finding the Fourth Proportional to 793.91, 1,095.05 and 558.36

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Solution

The fourth proportional to 793.91, 1,095.05 and 558.36 is: 770.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.91 : 1,095.05 = 558.36 : x
  2. Step 2: Convert to fraction form
    793.91/1,095.05 = 558.36/x
  3. Step 3: Cross multiply
    793.91x = 1,095.05 × 558.36
  4. Step 4: Simplify right side
    793.91x = 611,433.51
  5. Step 5: Solve for x
    x = 611,433.51/793.91
  6. Step 6: Final answer
    x = 770.15

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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.