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Finding the Fourth Proportional to 697.51, 962.52 and 382.78

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Solution

The fourth proportional to 697.51, 962.52 and 382.78 is: 528.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.51 : 962.52 = 382.78 : x
  2. Step 2: Convert to fraction form
    697.51/962.52 = 382.78/x
  3. Step 3: Cross multiply
    697.51x = 962.52 × 382.78
  4. Step 4: Simplify right side
    697.51x = 368,433.41
  5. Step 5: Solve for x
    x = 368,433.41/697.51
  6. Step 6: Final answer
    x = 528.21

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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.