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Finding the Fourth Proportional to 715.12, 986.46 and 452.68

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Solution

The fourth proportional to 715.12, 986.46 and 452.68 is: 624.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    715.12 : 986.46 = 452.68 : x
  2. Step 2: Convert to fraction form
    715.12/986.46 = 452.68/x
  3. Step 3: Cross multiply
    715.12x = 986.46 × 452.68
  4. Step 4: Simplify right side
    715.12x = 446,550.71
  5. Step 5: Solve for x
    x = 446,550.71/715.12
  6. Step 6: Final answer
    x = 624.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.