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Finding the Fourth Proportional to 620.14, 854.88 and 472.51

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Solution

The fourth proportional to 620.14, 854.88 and 472.51 is: 651.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.14 : 854.88 = 472.51 : x
  2. Step 2: Convert to fraction form
    620.14/854.88 = 472.51/x
  3. Step 3: Cross multiply
    620.14x = 854.88 × 472.51
  4. Step 4: Simplify right side
    620.14x = 403,939.35
  5. Step 5: Solve for x
    x = 403,939.35/620.14
  6. Step 6: Final answer
    x = 651.37

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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.