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Finding the Fourth Proportional to 589.76, 886.24 and 398.56

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Solution

The fourth proportional to 589.76, 886.24 and 398.56 is: 598.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.76 : 886.24 = 398.56 : x
  2. Step 2: Convert to fraction form
    589.76/886.24 = 398.56/x
  3. Step 3: Cross multiply
    589.76x = 886.24 × 398.56
  4. Step 4: Simplify right side
    589.76x = 353,219.81
  5. Step 5: Solve for x
    x = 353,219.81/589.76
  6. Step 6: Final answer
    x = 598.92

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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.