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Finding the Fourth Proportional to 1,732.54, 2,390.78 and 946.59

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Solution

The fourth proportional to 1,732.54, 2,390.78 and 946.59 is: 1,306.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,732.54 : 2,390.78 = 946.59 : x
  2. Step 2: Convert to fraction form
    1,732.54/2,390.78 = 946.59/x
  3. Step 3: Cross multiply
    1,732.54x = 2,390.78 × 946.59
  4. Step 4: Simplify right side
    1,732.54x = 2,263,088.44
  5. Step 5: Solve for x
    x = 2,263,088.44/1,732.54
  6. Step 6: Final answer
    x = 1,306.23

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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.