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Finding the Fourth Proportional to 901.07, 1,243.65 and 753.65

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Solution

The fourth proportional to 901.07, 1,243.65 and 753.65 is: 1,040.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.07 : 1,243.65 = 753.65 : x
  2. Step 2: Convert to fraction form
    901.07/1,243.65 = 753.65/x
  3. Step 3: Cross multiply
    901.07x = 1,243.65 × 753.65
  4. Step 4: Simplify right side
    901.07x = 937,285.09
  5. Step 5: Solve for x
    x = 937,285.09/901.07
  6. Step 6: Final answer
    x = 1,040.19

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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.