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Finding the Fourth Proportional to 697.62, 963.53 and 556.30

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Solution

The fourth proportional to 697.62, 963.53 and 556.30 is: 768.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.62 : 963.53 = 556.30 : x
  2. Step 2: Convert to fraction form
    697.62/963.53 = 556.30/x
  3. Step 3: Cross multiply
    697.62x = 963.53 × 556.30
  4. Step 4: Simplify right side
    697.62x = 536,006.55
  5. Step 5: Solve for x
    x = 536,006.55/697.62
  6. Step 6: Final answer
    x = 768.34

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1.5x scale

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.