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Finding the Fourth Proportional to 579.12, 864.18 and 527.37

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Solution

The fourth proportional to 579.12, 864.18 and 527.37 is: 786.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.12 : 864.18 = 527.37 : x
  2. Step 2: Convert to fraction form
    579.12/864.18 = 527.37/x
  3. Step 3: Cross multiply
    579.12x = 864.18 × 527.37
  4. Step 4: Simplify right side
    579.12x = 455,742.61
  5. Step 5: Solve for x
    x = 455,742.61/579.12
  6. Step 6: Final answer
    x = 786.96

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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.