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Finding the Fourth Proportional to 630.54, 866.64 and 556.41

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Solution

The fourth proportional to 630.54, 866.64 and 556.41 is: 764.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.54 : 866.64 = 556.41 : x
  2. Step 2: Convert to fraction form
    630.54/866.64 = 556.41/x
  3. Step 3: Cross multiply
    630.54x = 866.64 × 556.41
  4. Step 4: Simplify right side
    630.54x = 482,207.16
  5. Step 5: Solve for x
    x = 482,207.16/630.54
  6. Step 6: Final answer
    x = 764.75

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.