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Finding the Fourth Proportional to 1,064.05, 1,594.55 and 543.32

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Solution

The fourth proportional to 1,064.05, 1,594.55 and 543.32 is: 814.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,064.05 : 1,594.55 = 543.32 : x
  2. Step 2: Convert to fraction form
    1,064.05/1,594.55 = 543.32/x
  3. Step 3: Cross multiply
    1,064.05x = 1,594.55 × 543.32
  4. Step 4: Simplify right side
    1,064.05x = 866,350.27
  5. Step 5: Solve for x
    x = 866,350.27/1,064.05
  6. Step 6: Final answer
    x = 814.20

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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.