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Finding the Fourth Proportional to 491.53, 679.26 and 373.42

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Solution

The fourth proportional to 491.53, 679.26 and 373.42 is: 516.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.53 : 679.26 = 373.42 : x
  2. Step 2: Convert to fraction form
    491.53/679.26 = 373.42/x
  3. Step 3: Cross multiply
    491.53x = 679.26 × 373.42
  4. Step 4: Simplify right side
    491.53x = 253,649.27
  5. Step 5: Solve for x
    x = 253,649.27/491.53
  6. Step 6: Final answer
    x = 516.04

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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.