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Finding the Fourth Proportional to 1,257.38, 1,884.60 and 948.24

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Solution

The fourth proportional to 1,257.38, 1,884.60 and 948.24 is: 1,421.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257.38 : 1,884.60 = 948.24 : x
  2. Step 2: Convert to fraction form
    1,257.38/1,884.60 = 948.24/x
  3. Step 3: Cross multiply
    1,257.38x = 1,884.60 × 948.24
  4. Step 4: Simplify right side
    1,257.38x = 1,787,053.10
  5. Step 5: Solve for x
    x = 1,787,053.10/1,257.38
  6. Step 6: Final answer
    x = 1,421.25

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.