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Finding the Fourth Proportional to 697.37, 962.37 and 386.87

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Solution

The fourth proportional to 697.37, 962.37 and 386.87 is: 533.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.37 : 962.37 = 386.87 : x
  2. Step 2: Convert to fraction form
    697.37/962.37 = 386.87/x
  3. Step 3: Cross multiply
    697.37x = 962.37 × 386.87
  4. Step 4: Simplify right side
    697.37x = 372,307.27
  5. Step 5: Solve for x
    x = 372,307.27/697.37
  6. Step 6: Final answer
    x = 533.88

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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.