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Finding the Fourth Proportional to 536.39, 803.74 and 414.95

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Solution

The fourth proportional to 536.39, 803.74 and 414.95 is: 621.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.39 : 803.74 = 414.95 : x
  2. Step 2: Convert to fraction form
    536.39/803.74 = 414.95/x
  3. Step 3: Cross multiply
    536.39x = 803.74 × 414.95
  4. Step 4: Simplify right side
    536.39x = 333,511.91
  5. Step 5: Solve for x
    x = 333,511.91/536.39
  6. Step 6: Final answer
    x = 621.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.