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Finding the Fourth Proportional to 697.88, 962.40 and 540.27

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Solution

The fourth proportional to 697.88, 962.40 and 540.27 is: 745.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.88 : 962.40 = 540.27 : x
  2. Step 2: Convert to fraction form
    697.88/962.40 = 540.27/x
  3. Step 3: Cross multiply
    697.88x = 962.40 × 540.27
  4. Step 4: Simplify right side
    697.88x = 519,951.04
  5. Step 5: Solve for x
    x = 519,951.04/697.88
  6. Step 6: Final answer
    x = 745.05

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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.