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Finding the Fourth Proportional to 306.32, 459.65 and 203.65

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Solution

The fourth proportional to 306.32, 459.65 and 203.65 is: 305.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.32 : 459.65 = 203.65 : x
  2. Step 2: Convert to fraction form
    306.32/459.65 = 203.65/x
  3. Step 3: Cross multiply
    306.32x = 459.65 × 203.65
  4. Step 4: Simplify right side
    306.32x = 93,607.72
  5. Step 5: Solve for x
    x = 93,607.72/306.32
  6. Step 6: Final answer
    x = 305.59

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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.