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Finding the Fourth Proportional to 576.77, 795.80 and 355.73

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Solution

The fourth proportional to 576.77, 795.80 and 355.73 is: 490.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.77 : 795.80 = 355.73 : x
  2. Step 2: Convert to fraction form
    576.77/795.80 = 355.73/x
  3. Step 3: Cross multiply
    576.77x = 795.80 × 355.73
  4. Step 4: Simplify right side
    576.77x = 283,086.84
  5. Step 5: Solve for x
    x = 283,086.84/576.77
  6. Step 6: Final answer
    x = 490.82

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Find fourth proportional to 288.38, 397.90 and 177.86
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1.5x scale

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.