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Finding the Fourth Proportional to 715.46, 1,072.76 and 304.37

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Solution

The fourth proportional to 715.46, 1,072.76 and 304.37 is: 456.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    715.46 : 1,072.76 = 304.37 : x
  2. Step 2: Convert to fraction form
    715.46/1,072.76 = 304.37/x
  3. Step 3: Cross multiply
    715.46x = 1,072.76 × 304.37
  4. Step 4: Simplify right side
    715.46x = 326,509.08
  5. Step 5: Solve for x
    x = 326,509.08/715.46
  6. Step 6: Final answer
    x = 456.36

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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.