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Finding the Fourth Proportional to 675.88, 930.29 and 479.05

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Solution

The fourth proportional to 675.88, 930.29 and 479.05 is: 659.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.88 : 930.29 = 479.05 : x
  2. Step 2: Convert to fraction form
    675.88/930.29 = 479.05/x
  3. Step 3: Cross multiply
    675.88x = 930.29 × 479.05
  4. Step 4: Simplify right side
    675.88x = 445,655.42
  5. Step 5: Solve for x
    x = 445,655.42/675.88
  6. Step 6: Final answer
    x = 659.37

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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.