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Finding the Fourth Proportional to 629.51, 947.97 and 549.32

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Solution

The fourth proportional to 629.51, 947.97 and 549.32 is: 827.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.51 : 947.97 = 549.32 : x
  2. Step 2: Convert to fraction form
    629.51/947.97 = 549.32/x
  3. Step 3: Cross multiply
    629.51x = 947.97 × 549.32
  4. Step 4: Simplify right side
    629.51x = 520,734.14
  5. Step 5: Solve for x
    x = 520,734.14/629.51
  6. Step 6: Final answer
    x = 827.21

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.