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Finding the Fourth Proportional to 672.80, 927.92 and 541.58

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Solution

The fourth proportional to 672.80, 927.92 and 541.58 is: 746.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.80 : 927.92 = 541.58 : x
  2. Step 2: Convert to fraction form
    672.80/927.92 = 541.58/x
  3. Step 3: Cross multiply
    672.80x = 927.92 × 541.58
  4. Step 4: Simplify right side
    672.80x = 502,539.63
  5. Step 5: Solve for x
    x = 502,539.63/672.80
  6. Step 6: Final answer
    x = 746.94

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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.