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Finding the Fourth Proportional to 688.45, 950.46 and 522.37

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Solution

The fourth proportional to 688.45, 950.46 and 522.37 is: 721.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    688.45 : 950.46 = 522.37 : x
  2. Step 2: Convert to fraction form
    688.45/950.46 = 522.37/x
  3. Step 3: Cross multiply
    688.45x = 950.46 × 522.37
  4. Step 4: Simplify right side
    688.45x = 496,489.18
  5. Step 5: Solve for x
    x = 496,489.18/688.45
  6. Step 6: Final answer
    x = 721.17

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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.