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Finding the Fourth Proportional to 715.04, 986.64 and 452.64

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Solution

The fourth proportional to 715.04, 986.64 and 452.64 is: 624.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    715.04 : 986.64 = 452.64 : x
  2. Step 2: Convert to fraction form
    715.04/986.64 = 452.64/x
  3. Step 3: Cross multiply
    715.04x = 986.64 × 452.64
  4. Step 4: Simplify right side
    715.04x = 446,592.73
  5. Step 5: Solve for x
    x = 446,592.73/715.04
  6. Step 6: Final answer
    x = 624.57

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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.