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Finding the Fourth Proportional to 753.41, 1,125.10 and 745.26

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Solution

The fourth proportional to 753.41, 1,125.10 and 745.26 is: 1,112.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    753.41 : 1,125.10 = 745.26 : x
  2. Step 2: Convert to fraction form
    753.41/1,125.10 = 745.26/x
  3. Step 3: Cross multiply
    753.41x = 1,125.10 × 745.26
  4. Step 4: Simplify right side
    753.41x = 838,490.16
  5. Step 5: Solve for x
    x = 838,490.16/753.41
  6. Step 6: Final answer
    x = 1,112.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.