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Finding the Fourth Proportional to 473.07, 647.22 and 471.02

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Solution

The fourth proportional to 473.07, 647.22 and 471.02 is: 644.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.07 : 647.22 = 471.02 : x
  2. Step 2: Convert to fraction form
    473.07/647.22 = 471.02/x
  3. Step 3: Cross multiply
    473.07x = 647.22 × 471.02
  4. Step 4: Simplify right side
    473.07x = 304,850.33
  5. Step 5: Solve for x
    x = 304,850.33/473.07
  6. Step 6: Final answer
    x = 644.41

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.