Home / 1,141.27-1,574.95-617.30

Finding the Fourth Proportional to 1,141.27, 1,574.95 and 617.30

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Solution

The fourth proportional to 1,141.27, 1,574.95 and 617.30 is: 851.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,141.27 : 1,574.95 = 617.30 : x
  2. Step 2: Convert to fraction form
    1,141.27/1,574.95 = 617.30/x
  3. Step 3: Cross multiply
    1,141.27x = 1,574.95 × 617.30
  4. Step 4: Simplify right side
    1,141.27x = 972,211.94
  5. Step 5: Solve for x
    x = 972,211.94/1,141.27
  6. Step 6: Final answer
    x = 851.87

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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.