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Finding the Fourth Proportional to 637.51, 877.80 and 558.37

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Solution

The fourth proportional to 637.51, 877.80 and 558.37 is: 768.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.51 : 877.80 = 558.37 : x
  2. Step 2: Convert to fraction form
    637.51/877.80 = 558.37/x
  3. Step 3: Cross multiply
    637.51x = 877.80 × 558.37
  4. Step 4: Simplify right side
    637.51x = 490,132.80
  5. Step 5: Solve for x
    x = 490,132.80/637.51
  6. Step 6: Final answer
    x = 768.83

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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.