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Finding the Fourth Proportional to 491.46, 679.53 and 429.96

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Solution

The fourth proportional to 491.46, 679.53 and 429.96 is: 594.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.46 : 679.53 = 429.96 : x
  2. Step 2: Convert to fraction form
    491.46/679.53 = 429.96/x
  3. Step 3: Cross multiply
    491.46x = 679.53 × 429.96
  4. Step 4: Simplify right side
    491.46x = 292,170.72
  5. Step 5: Solve for x
    x = 292,170.72/491.46
  6. Step 6: Final answer
    x = 594.50

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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.