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Finding the Fourth Proportional to 574.19, 857.12 and 531.36

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Solution

The fourth proportional to 574.19, 857.12 and 531.36 is: 793.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.19 : 857.12 = 531.36 : x
  2. Step 2: Convert to fraction form
    574.19/857.12 = 531.36/x
  3. Step 3: Cross multiply
    574.19x = 857.12 × 531.36
  4. Step 4: Simplify right side
    574.19x = 455,439.28
  5. Step 5: Solve for x
    x = 455,439.28/574.19
  6. Step 6: Final answer
    x = 793.19

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.