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Finding the Fourth Proportional to 807.59, 1,114.10 and 475.79

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Solution

The fourth proportional to 807.59, 1,114.10 and 475.79 is: 656.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    807.59 : 1,114.10 = 475.79 : x
  2. Step 2: Convert to fraction form
    807.59/1,114.10 = 475.79/x
  3. Step 3: Cross multiply
    807.59x = 1,114.10 × 475.79
  4. Step 4: Simplify right side
    807.59x = 530,069.69
  5. Step 5: Solve for x
    x = 530,069.69/807.59
  6. Step 6: Final answer
    x = 656.36

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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.