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Finding the Fourth Proportional to 1,295.39, 1,787.69 and 705.94

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Solution

The fourth proportional to 1,295.39, 1,787.69 and 705.94 is: 974.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295.39 : 1,787.69 = 705.94 : x
  2. Step 2: Convert to fraction form
    1,295.39/1,787.69 = 705.94/x
  3. Step 3: Cross multiply
    1,295.39x = 1,787.69 × 705.94
  4. Step 4: Simplify right side
    1,295.39x = 1,262,001.88
  5. Step 5: Solve for x
    x = 1,262,001.88/1,295.39
  6. Step 6: Final answer
    x = 974.23

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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.