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Finding the Fourth Proportional to 801.44, 1,106.26 and 507.11

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Solution

The fourth proportional to 801.44, 1,106.26 and 507.11 is: 699.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.44 : 1,106.26 = 507.11 : x
  2. Step 2: Convert to fraction form
    801.44/1,106.26 = 507.11/x
  3. Step 3: Cross multiply
    801.44x = 1,106.26 × 507.11
  4. Step 4: Simplify right side
    801.44x = 560,994.93
  5. Step 5: Solve for x
    x = 560,994.93/801.44
  6. Step 6: Final answer
    x = 699.98

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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.