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Finding the Fourth Proportional to 629.52, 948 and 549.30

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Solution

The fourth proportional to 629.52, 948 and 549.30 is: 827.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.52 : 948 = 549.30 : x
  2. Step 2: Convert to fraction form
    629.52/948 = 549.30/x
  3. Step 3: Cross multiply
    629.52x = 948 × 549.30
  4. Step 4: Simplify right side
    629.52x = 520,736.40
  5. Step 5: Solve for x
    x = 520,736.40/629.52
  6. Step 6: Final answer
    x = 827.20

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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.