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Finding the Fourth Proportional to 1,437.95, 1,984.24 and 808.43

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Solution

The fourth proportional to 1,437.95, 1,984.24 and 808.43 is: 1,115.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.95 : 1,984.24 = 808.43 : x
  2. Step 2: Convert to fraction form
    1,437.95/1,984.24 = 808.43/x
  3. Step 3: Cross multiply
    1,437.95x = 1,984.24 × 808.43
  4. Step 4: Simplify right side
    1,437.95x = 1,604,119.14
  5. Step 5: Solve for x
    x = 1,604,119.14/1,437.95
  6. Step 6: Final answer
    x = 1,115.56

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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.