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Finding the Fourth Proportional to 745.99, 1,118.62 and 472.62

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Solution

The fourth proportional to 745.99, 1,118.62 and 472.62 is: 708.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    745.99 : 1,118.62 = 472.62 : x
  2. Step 2: Convert to fraction form
    745.99/1,118.62 = 472.62/x
  3. Step 3: Cross multiply
    745.99x = 1,118.62 × 472.62
  4. Step 4: Simplify right side
    745.99x = 528,682.18
  5. Step 5: Solve for x
    x = 528,682.18/745.99
  6. Step 6: Final answer
    x = 708.70

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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.