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Finding the Fourth Proportional to 806.58, 1,112.94 and 475.02

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Solution

The fourth proportional to 806.58, 1,112.94 and 475.02 is: 655.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    806.58 : 1,112.94 = 475.02 : x
  2. Step 2: Convert to fraction form
    806.58/1,112.94 = 475.02/x
  3. Step 3: Cross multiply
    806.58x = 1,112.94 × 475.02
  4. Step 4: Simplify right side
    806.58x = 528,668.76
  5. Step 5: Solve for x
    x = 528,668.76/806.58
  6. Step 6: Final answer
    x = 655.44

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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.