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Finding the Fourth Proportional to 694.81, 959.58 and 474.34

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Solution

The fourth proportional to 694.81, 959.58 and 474.34 is: 655.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.81 : 959.58 = 474.34 : x
  2. Step 2: Convert to fraction form
    694.81/959.58 = 474.34/x
  3. Step 3: Cross multiply
    694.81x = 959.58 × 474.34
  4. Step 4: Simplify right side
    694.81x = 455,167.18
  5. Step 5: Solve for x
    x = 455,167.18/694.81
  6. Step 6: Final answer
    x = 655.10

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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.