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Finding the Fourth Proportional to 577.23, 866.18 and 317.06

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Solution

The fourth proportional to 577.23, 866.18 and 317.06 is: 475.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.23 : 866.18 = 317.06 : x
  2. Step 2: Convert to fraction form
    577.23/866.18 = 317.06/x
  3. Step 3: Cross multiply
    577.23x = 866.18 × 317.06
  4. Step 4: Simplify right side
    577.23x = 274,633.83
  5. Step 5: Solve for x
    x = 274,633.83/577.23
  6. Step 6: Final answer
    x = 475.78

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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.