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Finding the Fourth Proportional to 948.59, 1,308.49 and 738.43

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Solution

The fourth proportional to 948.59, 1,308.49 and 738.43 is: 1,018.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    948.59 : 1,308.49 = 738.43 : x
  2. Step 2: Convert to fraction form
    948.59/1,308.49 = 738.43/x
  3. Step 3: Cross multiply
    948.59x = 1,308.49 × 738.43
  4. Step 4: Simplify right side
    948.59x = 966,235.38
  5. Step 5: Solve for x
    x = 966,235.38/948.59
  6. Step 6: Final answer
    x = 1,018.60

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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.