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Finding the Fourth Proportional to 697.88, 962.88 and 436.16

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Solution

The fourth proportional to 697.88, 962.88 and 436.16 is: 601.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.88 : 962.88 = 436.16 : x
  2. Step 2: Convert to fraction form
    697.88/962.88 = 436.16/x
  3. Step 3: Cross multiply
    697.88x = 962.88 × 436.16
  4. Step 4: Simplify right side
    697.88x = 419,969.74
  5. Step 5: Solve for x
    x = 419,969.74/697.88
  6. Step 6: Final answer
    x = 601.78

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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.