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Finding the Fourth Proportional to 575.68, 867.37 and 520.91

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Solution

The fourth proportional to 575.68, 867.37 and 520.91 is: 784.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.68 : 867.37 = 520.91 : x
  2. Step 2: Convert to fraction form
    575.68/867.37 = 520.91/x
  3. Step 3: Cross multiply
    575.68x = 867.37 × 520.91
  4. Step 4: Simplify right side
    575.68x = 451,814.77
  5. Step 5: Solve for x
    x = 451,814.77/575.68
  6. Step 6: Final answer
    x = 784.84

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.