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Finding the Fourth Proportional to 1,742.94, 2,405.30 and 957.04

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Solution

The fourth proportional to 1,742.94, 2,405.30 and 957.04 is: 1,320.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,742.94 : 2,405.30 = 957.04 : x
  2. Step 2: Convert to fraction form
    1,742.94/2,405.30 = 957.04/x
  3. Step 3: Cross multiply
    1,742.94x = 2,405.30 × 957.04
  4. Step 4: Simplify right side
    1,742.94x = 2,301,957.51
  5. Step 5: Solve for x
    x = 2,301,957.51/1,742.94
  6. Step 6: Final answer
    x = 1,320.73

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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.