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Finding the Fourth Proportional to 745.40, 992.06 and 745.40

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Solution

The fourth proportional to 745.40, 992.06 and 745.40 is: 992.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    745.40 : 992.06 = 745.40 : x
  2. Step 2: Convert to fraction form
    745.40/992.06 = 745.40/x
  3. Step 3: Cross multiply
    745.40x = 992.06 × 745.40
  4. Step 4: Simplify right side
    745.40x = 739,481.52
  5. Step 5: Solve for x
    x = 739,481.52/745.40
  6. Step 6: Final answer
    x = 992.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.