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Finding the Fourth Proportional to 745.36, 1,117.33 and 355.16

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Solution

The fourth proportional to 745.36, 1,117.33 and 355.16 is: 532.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    745.36 : 1,117.33 = 355.16 : x
  2. Step 2: Convert to fraction form
    745.36/1,117.33 = 355.16/x
  3. Step 3: Cross multiply
    745.36x = 1,117.33 × 355.16
  4. Step 4: Simplify right side
    745.36x = 396,832.83
  5. Step 5: Solve for x
    x = 396,832.83/745.36
  6. Step 6: Final answer
    x = 532.41

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.