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Finding the Fourth Proportional to 405.01, 558.86 and 227.95

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Solution

The fourth proportional to 405.01, 558.86 and 227.95 is: 314.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    405.01 : 558.86 = 227.95 : x
  2. Step 2: Convert to fraction form
    405.01/558.86 = 227.95/x
  3. Step 3: Cross multiply
    405.01x = 558.86 × 227.95
  4. Step 4: Simplify right side
    405.01x = 127,390.02
  5. Step 5: Solve for x
    x = 127,390.02/405.01
  6. Step 6: Final answer
    x = 314.53

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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.