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Finding the Fourth Proportional to 675.09, 1,011.85 and 304.47

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Solution

The fourth proportional to 675.09, 1,011.85 and 304.47 is: 456.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.09 : 1,011.85 = 304.47 : x
  2. Step 2: Convert to fraction form
    675.09/1,011.85 = 304.47/x
  3. Step 3: Cross multiply
    675.09x = 1,011.85 × 304.47
  4. Step 4: Simplify right side
    675.09x = 308,071.83
  5. Step 5: Solve for x
    x = 308,071.83/675.09
  6. Step 6: Final answer
    x = 456.34

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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.