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Finding the Fourth Proportional to 637.68, 879.96 and 357.93

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Solution

The fourth proportional to 637.68, 879.96 and 357.93 is: 493.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.68 : 879.96 = 357.93 : x
  2. Step 2: Convert to fraction form
    637.68/879.96 = 357.93/x
  3. Step 3: Cross multiply
    637.68x = 879.96 × 357.93
  4. Step 4: Simplify right side
    637.68x = 314,964.08
  5. Step 5: Solve for x
    x = 314,964.08/637.68
  6. Step 6: Final answer
    x = 493.92

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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.