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Finding the Fourth Proportional to 745.87, 1,029.50 and 451.37

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Solution

The fourth proportional to 745.87, 1,029.50 and 451.37 is: 623.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    745.87 : 1,029.50 = 451.37 : x
  2. Step 2: Convert to fraction form
    745.87/1,029.50 = 451.37/x
  3. Step 3: Cross multiply
    745.87x = 1,029.50 × 451.37
  4. Step 4: Simplify right side
    745.87x = 464,685.42
  5. Step 5: Solve for x
    x = 464,685.42/745.87
  6. Step 6: Final answer
    x = 623.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.