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Finding the Fourth Proportional to 1,444.90, 1,994.94 and 948.39

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Solution

The fourth proportional to 1,444.90, 1,994.94 and 948.39 is: 1,309.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,444.90 : 1,994.94 = 948.39 : x
  2. Step 2: Convert to fraction form
    1,444.90/1,994.94 = 948.39/x
  3. Step 3: Cross multiply
    1,444.90x = 1,994.94 × 948.39
  4. Step 4: Simplify right side
    1,444.90x = 1,891,977.22
  5. Step 5: Solve for x
    x = 1,891,977.22/1,444.90
  6. Step 6: Final answer
    x = 1,309.41

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Half scale
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Double scale
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1.5x scale

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.