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Finding the Fourth Proportional to 715.93, 1,073.30 and 276.95

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Solution

The fourth proportional to 715.93, 1,073.30 and 276.95 is: 415.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    715.93 : 1,073.30 = 276.95 : x
  2. Step 2: Convert to fraction form
    715.93/1,073.30 = 276.95/x
  3. Step 3: Cross multiply
    715.93x = 1,073.30 × 276.95
  4. Step 4: Simplify right side
    715.93x = 297,251.73
  5. Step 5: Solve for x
    x = 297,251.73/715.93
  6. Step 6: Final answer
    x = 415.20

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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.