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Finding the Fourth Proportional to 589.12, 883.86 and 578.32

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Solution

The fourth proportional to 589.12, 883.86 and 578.32 is: 867.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.12 : 883.86 = 578.32 : x
  2. Step 2: Convert to fraction form
    589.12/883.86 = 578.32/x
  3. Step 3: Cross multiply
    589.12x = 883.86 × 578.32
  4. Step 4: Simplify right side
    589.12x = 511,153.92
  5. Step 5: Solve for x
    x = 511,153.92/589.12
  6. Step 6: Final answer
    x = 867.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.