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Finding the Fourth Proportional to 699.22, 965.10 and 404.56

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Solution

The fourth proportional to 699.22, 965.10 and 404.56 is: 558.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.22 : 965.10 = 404.56 : x
  2. Step 2: Convert to fraction form
    699.22/965.10 = 404.56/x
  3. Step 3: Cross multiply
    699.22x = 965.10 × 404.56
  4. Step 4: Simplify right side
    699.22x = 390,440.86
  5. Step 5: Solve for x
    x = 390,440.86/699.22
  6. Step 6: Final answer
    x = 558.39

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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.