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Finding the Fourth Proportional to 745.91, 1,118.86 and 334.93

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Solution

The fourth proportional to 745.91, 1,118.86 and 334.93 is: 502.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    745.91 : 1,118.86 = 334.93 : x
  2. Step 2: Convert to fraction form
    745.91/1,118.86 = 334.93/x
  3. Step 3: Cross multiply
    745.91x = 1,118.86 × 334.93
  4. Step 4: Simplify right side
    745.91x = 374,738.11
  5. Step 5: Solve for x
    x = 374,738.11/745.91
  6. Step 6: Final answer
    x = 502.39

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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.