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Finding the Fourth Proportional to 1,705.15, 2,353.04 and 959.15

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Solution

The fourth proportional to 1,705.15, 2,353.04 and 959.15 is: 1,323.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705.15 : 2,353.04 = 959.15 : x
  2. Step 2: Convert to fraction form
    1,705.15/2,353.04 = 959.15/x
  3. Step 3: Cross multiply
    1,705.15x = 2,353.04 × 959.15
  4. Step 4: Simplify right side
    1,705.15x = 2,256,918.32
  5. Step 5: Solve for x
    x = 2,256,918.32/1,705.15
  6. Step 6: Final answer
    x = 1,323.59

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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.