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Finding the Fourth Proportional to 637.29, 879.55 and 357.59

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Solution

The fourth proportional to 637.29, 879.55 and 357.59 is: 493.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.29 : 879.55 = 357.59 : x
  2. Step 2: Convert to fraction form
    637.29/879.55 = 357.59/x
  3. Step 3: Cross multiply
    637.29x = 879.55 × 357.59
  4. Step 4: Simplify right side
    637.29x = 314,519.59
  5. Step 5: Solve for x
    x = 314,519.59/637.29
  6. Step 6: Final answer
    x = 493.53

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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.