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Finding the Fourth Proportional to 556.29, 833.14 and 439.95

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Solution

The fourth proportional to 556.29, 833.14 and 439.95 is: 658.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.29 : 833.14 = 439.95 : x
  2. Step 2: Convert to fraction form
    556.29/833.14 = 439.95/x
  3. Step 3: Cross multiply
    556.29x = 833.14 × 439.95
  4. Step 4: Simplify right side
    556.29x = 366,539.94
  5. Step 5: Solve for x
    x = 366,539.94/556.29
  6. Step 6: Final answer
    x = 658.90

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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.