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Finding the Fourth Proportional to 697.28, 962.88 and 579.44

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Solution

The fourth proportional to 697.28, 962.88 and 579.44 is: 800.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.28 : 962.88 = 579.44 : x
  2. Step 2: Convert to fraction form
    697.28/962.88 = 579.44/x
  3. Step 3: Cross multiply
    697.28x = 962.88 × 579.44
  4. Step 4: Simplify right side
    697.28x = 557,931.19
  5. Step 5: Solve for x
    x = 557,931.19/697.28
  6. Step 6: Final answer
    x = 800.15

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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.