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Finding the Fourth Proportional to 699.43, 965.21 and 437.39

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Solution

The fourth proportional to 699.43, 965.21 and 437.39 is: 603.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.43 : 965.21 = 437.39 : x
  2. Step 2: Convert to fraction form
    699.43/965.21 = 437.39/x
  3. Step 3: Cross multiply
    699.43x = 965.21 × 437.39
  4. Step 4: Simplify right side
    699.43x = 422,176.71
  5. Step 5: Solve for x
    x = 422,176.71/699.43
  6. Step 6: Final answer
    x = 603.60

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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.