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Finding the Fourth Proportional to 862.32, 1,190.54 and 568.09

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Solution

The fourth proportional to 862.32, 1,190.54 and 568.09 is: 784.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    862.32 : 1,190.54 = 568.09 : x
  2. Step 2: Convert to fraction form
    862.32/1,190.54 = 568.09/x
  3. Step 3: Cross multiply
    862.32x = 1,190.54 × 568.09
  4. Step 4: Simplify right side
    862.32x = 676,332.31
  5. Step 5: Solve for x
    x = 676,332.31/862.32
  6. Step 6: Final answer
    x = 784.32

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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.