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Finding the Fourth Proportional to 1,359.51, 2,040.48 and 630.51

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Solution

The fourth proportional to 1,359.51, 2,040.48 and 630.51 is: 946.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.51 : 2,040.48 = 630.51 : x
  2. Step 2: Convert to fraction form
    1,359.51/2,040.48 = 630.51/x
  3. Step 3: Cross multiply
    1,359.51x = 2,040.48 × 630.51
  4. Step 4: Simplify right side
    1,359.51x = 1,286,543.04
  5. Step 5: Solve for x
    x = 1,286,543.04/1,359.51
  6. Step 6: Final answer
    x = 946.33

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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.