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Finding the Fourth Proportional to 577.12, 866.16 and 406.24

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Solution

The fourth proportional to 577.12, 866.16 and 406.24 is: 609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.12 : 866.16 = 406.24 : x
  2. Step 2: Convert to fraction form
    577.12/866.16 = 406.24/x
  3. Step 3: Cross multiply
    577.12x = 866.16 × 406.24
  4. Step 4: Simplify right side
    577.12x = 351,868.84
  5. Step 5: Solve for x
    x = 351,868.84/577.12
  6. Step 6: Final answer
    x = 609.70

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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.