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Finding the Fourth Proportional to 697.03, 961.91 and 386.53

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Solution

The fourth proportional to 697.03, 961.91 and 386.53 is: 533.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.03 : 961.91 = 386.53 : x
  2. Step 2: Convert to fraction form
    697.03/961.91 = 386.53/x
  3. Step 3: Cross multiply
    697.03x = 961.91 × 386.53
  4. Step 4: Simplify right side
    697.03x = 371,807.07
  5. Step 5: Solve for x
    x = 371,807.07/697.03
  6. Step 6: Final answer
    x = 533.42

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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.