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Finding the Fourth Proportional to 670.22, 1,006.05 and 563.18

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Solution

The fourth proportional to 670.22, 1,006.05 and 563.18 is: 845.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.22 : 1,006.05 = 563.18 : x
  2. Step 2: Convert to fraction form
    670.22/1,006.05 = 563.18/x
  3. Step 3: Cross multiply
    670.22x = 1,006.05 × 563.18
  4. Step 4: Simplify right side
    670.22x = 566,587.24
  5. Step 5: Solve for x
    x = 566,587.24/670.22
  6. Step 6: Final answer
    x = 845.38

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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.