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Finding the Fourth Proportional to 694.98, 956.88 and 528.66

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Solution

The fourth proportional to 694.98, 956.88 and 528.66 is: 727.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.98 : 956.88 = 528.66 : x
  2. Step 2: Convert to fraction form
    694.98/956.88 = 528.66/x
  3. Step 3: Cross multiply
    694.98x = 956.88 × 528.66
  4. Step 4: Simplify right side
    694.98x = 505,864.18
  5. Step 5: Solve for x
    x = 505,864.18/694.98
  6. Step 6: Final answer
    x = 727.88

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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.