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Finding the Fourth Proportional to 699.60, 1,050.22 and 555.42

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Solution

The fourth proportional to 699.60, 1,050.22 and 555.42 is: 833.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.60 : 1,050.22 = 555.42 : x
  2. Step 2: Convert to fraction form
    699.60/1,050.22 = 555.42/x
  3. Step 3: Cross multiply
    699.60x = 1,050.22 × 555.42
  4. Step 4: Simplify right side
    699.60x = 583,313.19
  5. Step 5: Solve for x
    x = 583,313.19/699.60
  6. Step 6: Final answer
    x = 833.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.