Home / 1,042.28-1,438.29-576.50

Finding the Fourth Proportional to 1,042.28, 1,438.29 and 576.50

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Solution

The fourth proportional to 1,042.28, 1,438.29 and 576.50 is: 795.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,042.28 : 1,438.29 = 576.50 : x
  2. Step 2: Convert to fraction form
    1,042.28/1,438.29 = 576.50/x
  3. Step 3: Cross multiply
    1,042.28x = 1,438.29 × 576.50
  4. Step 4: Simplify right side
    1,042.28x = 829,174.19
  5. Step 5: Solve for x
    x = 829,174.19/1,042.28
  6. Step 6: Final answer
    x = 795.54

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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.