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Finding the Fourth Proportional to 740.99, 1,111.40 and 247.37

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Solution

The fourth proportional to 740.99, 1,111.40 and 247.37 is: 371.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.99 : 1,111.40 = 247.37 : x
  2. Step 2: Convert to fraction form
    740.99/1,111.40 = 247.37/x
  3. Step 3: Cross multiply
    740.99x = 1,111.40 × 247.37
  4. Step 4: Simplify right side
    740.99x = 274,920.22
  5. Step 5: Solve for x
    x = 274,920.22/740.99
  6. Step 6: Final answer
    x = 371.02

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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.