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Finding the Fourth Proportional to 364.98, 503.64 and 215.61

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Solution

The fourth proportional to 364.98, 503.64 and 215.61 is: 297.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.98 : 503.64 = 215.61 : x
  2. Step 2: Convert to fraction form
    364.98/503.64 = 215.61/x
  3. Step 3: Cross multiply
    364.98x = 503.64 × 215.61
  4. Step 4: Simplify right side
    364.98x = 108,589.82
  5. Step 5: Solve for x
    x = 108,589.82/364.98
  6. Step 6: Final answer
    x = 297.52

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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.