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Finding the Fourth Proportional to 745.41, 1,117.56 and 452.98

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Solution

The fourth proportional to 745.41, 1,117.56 and 452.98 is: 679.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    745.41 : 1,117.56 = 452.98 : x
  2. Step 2: Convert to fraction form
    745.41/1,117.56 = 452.98/x
  3. Step 3: Cross multiply
    745.41x = 1,117.56 × 452.98
  4. Step 4: Simplify right side
    745.41x = 506,232.33
  5. Step 5: Solve for x
    x = 506,232.33/745.41
  6. Step 6: Final answer
    x = 679.13

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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.