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Finding the Fourth Proportional to 630.74, 868.62 and 541.52

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Solution

The fourth proportional to 630.74, 868.62 and 541.52 is: 745.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.74 : 868.62 = 541.52 : x
  2. Step 2: Convert to fraction form
    630.74/868.62 = 541.52/x
  3. Step 3: Cross multiply
    630.74x = 868.62 × 541.52
  4. Step 4: Simplify right side
    630.74x = 470,375.10
  5. Step 5: Solve for x
    x = 470,375.10/630.74
  6. Step 6: Final answer
    x = 745.75

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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.