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Finding the Fourth Proportional to 1,064.12, 1,594.44 and 543.40

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Solution

The fourth proportional to 1,064.12, 1,594.44 and 543.40 is: 814.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,064.12 : 1,594.44 = 543.40 : x
  2. Step 2: Convert to fraction form
    1,064.12/1,594.44 = 543.40/x
  3. Step 3: Cross multiply
    1,064.12x = 1,594.44 × 543.40
  4. Step 4: Simplify right side
    1,064.12x = 866,418.70
  5. Step 5: Solve for x
    x = 866,418.70/1,064.12
  6. Step 6: Final answer
    x = 814.21

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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.