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Finding the Fourth Proportional to 1,042.40, 1,563.07 and 348.82

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Solution

The fourth proportional to 1,042.40, 1,563.07 and 348.82 is: 523.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,042.40 : 1,563.07 = 348.82 : x
  2. Step 2: Convert to fraction form
    1,042.40/1,563.07 = 348.82/x
  3. Step 3: Cross multiply
    1,042.40x = 1,563.07 × 348.82
  4. Step 4: Simplify right side
    1,042.40x = 545,230.08
  5. Step 5: Solve for x
    x = 545,230.08/1,042.40
  6. Step 6: Final answer
    x = 523.05

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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.