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Finding the Fourth Proportional to 1,042.43, 1,438.58 and 594.38

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Solution

The fourth proportional to 1,042.43, 1,438.58 and 594.38 is: 820.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,042.43 : 1,438.58 = 594.38 : x
  2. Step 2: Convert to fraction form
    1,042.43/1,438.58 = 594.38/x
  3. Step 3: Cross multiply
    1,042.43x = 1,438.58 × 594.38
  4. Step 4: Simplify right side
    1,042.43x = 855,053.02
  5. Step 5: Solve for x
    x = 855,053.02/1,042.43
  6. Step 6: Final answer
    x = 820.25

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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.