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Finding the Fourth Proportional to 1,042.83, 1,565.39 and 522.69

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Solution

The fourth proportional to 1,042.83, 1,565.39 and 522.69 is: 784.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,042.83 : 1,565.39 = 522.69 : x
  2. Step 2: Convert to fraction form
    1,042.83/1,565.39 = 522.69/x
  3. Step 3: Cross multiply
    1,042.83x = 1,565.39 × 522.69
  4. Step 4: Simplify right side
    1,042.83x = 818,213.70
  5. Step 5: Solve for x
    x = 818,213.70/1,042.83
  6. Step 6: Final answer
    x = 784.61

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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.