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Finding the Fourth Proportional to 1,284.82, 1,925.39 and 634.80

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Solution

The fourth proportional to 1,284.82, 1,925.39 and 634.80 is: 951.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.82 : 1,925.39 = 634.80 : x
  2. Step 2: Convert to fraction form
    1,284.82/1,925.39 = 634.80/x
  3. Step 3: Cross multiply
    1,284.82x = 1,925.39 × 634.80
  4. Step 4: Simplify right side
    1,284.82x = 1,222,224.77
  5. Step 5: Solve for x
    x = 1,222,224.77/1,284.82
  6. Step 6: Final answer
    x = 951.28

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1.5x scale

Why These Related Problems?

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