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Finding the Fourth Proportional to 637.09, 879.78 and 602.57

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Solution

The fourth proportional to 637.09, 879.78 and 602.57 is: 832.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.09 : 879.78 = 602.57 : x
  2. Step 2: Convert to fraction form
    637.09/879.78 = 602.57/x
  3. Step 3: Cross multiply
    637.09x = 879.78 × 602.57
  4. Step 4: Simplify right side
    637.09x = 530,130.10
  5. Step 5: Solve for x
    x = 530,130.10/637.09
  6. Step 6: Final answer
    x = 832.11

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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.