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Finding the Fourth Proportional to 714.65, 986.15 and 452.57

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Solution

The fourth proportional to 714.65, 986.15 and 452.57 is: 624.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.65 : 986.15 = 452.57 : x
  2. Step 2: Convert to fraction form
    714.65/986.15 = 452.57/x
  3. Step 3: Cross multiply
    714.65x = 986.15 × 452.57
  4. Step 4: Simplify right side
    714.65x = 446,298.11
  5. Step 5: Solve for x
    x = 446,298.11/714.65
  6. Step 6: Final answer
    x = 624.50

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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.