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Finding the Fourth Proportional to 630, 944.08 and 552.78

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Solution

The fourth proportional to 630, 944.08 and 552.78 is: 828.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    630 : 944.08 = 552.78 : x
  2. Step 2: Convert to fraction form
    630/944.08 = 552.78/x
  3. Step 3: Cross multiply
    630x = 944.08 × 552.78
  4. Step 4: Simplify right side
    630x = 521,868.54
  5. Step 5: Solve for x
    x = 521,868.54/630
  6. Step 6: Final answer
    x = 828.36

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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.