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Finding the Fourth Proportional to 714.24, 986.24 and 504.45

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Solution

The fourth proportional to 714.24, 986.24 and 504.45 is: 696.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.24 : 986.24 = 504.45 : x
  2. Step 2: Convert to fraction form
    714.24/986.24 = 504.45/x
  3. Step 3: Cross multiply
    714.24x = 986.24 × 504.45
  4. Step 4: Simplify right side
    714.24x = 497,510.03
  5. Step 5: Solve for x
    x = 497,510.03/714.24
  6. Step 6: Final answer
    x = 696.56

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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.