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Finding the Fourth Proportional to 372.24, 511.80 and 356.76

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Solution

The fourth proportional to 372.24, 511.80 and 356.76 is: 490.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.24 : 511.80 = 356.76 : x
  2. Step 2: Convert to fraction form
    372.24/511.80 = 356.76/x
  3. Step 3: Cross multiply
    372.24x = 511.80 × 356.76
  4. Step 4: Simplify right side
    372.24x = 182,589.77
  5. Step 5: Solve for x
    x = 182,589.77/372.24
  6. Step 6: Final answer
    x = 490.52

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.