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Finding the Fourth Proportional to 1,437.96, 1,984.46 and 808.59

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Solution

The fourth proportional to 1,437.96, 1,984.46 and 808.59 is: 1,115.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.96 : 1,984.46 = 808.59 : x
  2. Step 2: Convert to fraction form
    1,437.96/1,984.46 = 808.59/x
  3. Step 3: Cross multiply
    1,437.96x = 1,984.46 × 808.59
  4. Step 4: Simplify right side
    1,437.96x = 1,604,618.74
  5. Step 5: Solve for x
    x = 1,604,618.74/1,437.96
  6. Step 6: Final answer
    x = 1,115.90

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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.