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Finding the Fourth Proportional to 305.91, 456.69 and 262.59

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Solution

The fourth proportional to 305.91, 456.69 and 262.59 is: 392.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.91 : 456.69 = 262.59 : x
  2. Step 2: Convert to fraction form
    305.91/456.69 = 262.59/x
  3. Step 3: Cross multiply
    305.91x = 456.69 × 262.59
  4. Step 4: Simplify right side
    305.91x = 119,922.23
  5. Step 5: Solve for x
    x = 119,922.23/305.91
  6. Step 6: Final answer
    x = 392.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.