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Finding the Fourth Proportional to 1,705.77, 2,353.79 and 959.71

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Solution

The fourth proportional to 1,705.77, 2,353.79 and 959.71 is: 1,324.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705.77 : 2,353.79 = 959.71 : x
  2. Step 2: Convert to fraction form
    1,705.77/2,353.79 = 959.71/x
  3. Step 3: Cross multiply
    1,705.77x = 2,353.79 × 959.71
  4. Step 4: Simplify right side
    1,705.77x = 2,258,962.34
  5. Step 5: Solve for x
    x = 2,258,962.34/1,705.77
  6. Step 6: Final answer
    x = 1,324.31

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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.