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Finding the Fourth Proportional to 488.26, 672.15 and 377.53

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Solution

The fourth proportional to 488.26, 672.15 and 377.53 is: 519.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.26 : 672.15 = 377.53 : x
  2. Step 2: Convert to fraction form
    488.26/672.15 = 377.53/x
  3. Step 3: Cross multiply
    488.26x = 672.15 × 377.53
  4. Step 4: Simplify right side
    488.26x = 253,754.40
  5. Step 5: Solve for x
    x = 253,754.40/488.26
  6. Step 6: Final answer
    x = 519.71

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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.