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Finding the Fourth Proportional to 1,141.04, 1,574.64 and 617.07

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Solution

The fourth proportional to 1,141.04, 1,574.64 and 617.07 is: 851.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,141.04 : 1,574.64 = 617.07 : x
  2. Step 2: Convert to fraction form
    1,141.04/1,574.64 = 617.07/x
  3. Step 3: Cross multiply
    1,141.04x = 1,574.64 × 617.07
  4. Step 4: Simplify right side
    1,141.04x = 971,665.50
  5. Step 5: Solve for x
    x = 971,665.50/1,141.04
  6. Step 6: Final answer
    x = 851.56

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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.