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Finding the Fourth Proportional to 1,304.68, 1,957.33 and 427.23

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Solution

The fourth proportional to 1,304.68, 1,957.33 and 427.23 is: 640.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,304.68 : 1,957.33 = 427.23 : x
  2. Step 2: Convert to fraction form
    1,304.68/1,957.33 = 427.23/x
  3. Step 3: Cross multiply
    1,304.68x = 1,957.33 × 427.23
  4. Step 4: Simplify right side
    1,304.68x = 836,230.10
  5. Step 5: Solve for x
    x = 836,230.10/1,304.68
  6. Step 6: Final answer
    x = 640.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.