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Finding the Fourth Proportional to 562.74, 776.67 and 326.85

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Solution

The fourth proportional to 562.74, 776.67 and 326.85 is: 451.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.74 : 776.67 = 326.85 : x
  2. Step 2: Convert to fraction form
    562.74/776.67 = 326.85/x
  3. Step 3: Cross multiply
    562.74x = 776.67 × 326.85
  4. Step 4: Simplify right side
    562.74x = 253,854.59
  5. Step 5: Solve for x
    x = 253,854.59/562.74
  6. Step 6: Final answer
    x = 451.10

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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.