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Finding the Fourth Proportional to 694.17, 959.04 and 657.72

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Solution

The fourth proportional to 694.17, 959.04 and 657.72 is: 908.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.17 : 959.04 = 657.72 : x
  2. Step 2: Convert to fraction form
    694.17/959.04 = 657.72/x
  3. Step 3: Cross multiply
    694.17x = 959.04 × 657.72
  4. Step 4: Simplify right side
    694.17x = 630,779.79
  5. Step 5: Solve for x
    x = 630,779.79/694.17
  6. Step 6: Final answer
    x = 908.68

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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.