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Finding the Fourth Proportional to 305.56, 457.15 and 183.89

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Solution

The fourth proportional to 305.56, 457.15 and 183.89 is: 275.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.56 : 457.15 = 183.89 : x
  2. Step 2: Convert to fraction form
    305.56/457.15 = 183.89/x
  3. Step 3: Cross multiply
    305.56x = 457.15 × 183.89
  4. Step 4: Simplify right side
    305.56x = 84,065.31
  5. Step 5: Solve for x
    x = 84,065.31/305.56
  6. Step 6: Final answer
    x = 275.12

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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.