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Finding the Fourth Proportional to 1,302.46, 1,797.46 and 971.78

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Solution

The fourth proportional to 1,302.46, 1,797.46 and 971.78 is: 1,341.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302.46 : 1,797.46 = 971.78 : x
  2. Step 2: Convert to fraction form
    1,302.46/1,797.46 = 971.78/x
  3. Step 3: Cross multiply
    1,302.46x = 1,797.46 × 971.78
  4. Step 4: Simplify right side
    1,302.46x = 1,746,735.68
  5. Step 5: Solve for x
    x = 1,746,735.68/1,302.46
  6. Step 6: Final answer
    x = 1,341.11

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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.