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Finding the Fourth Proportional to 577.38, 866.06 and 553.08

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Solution

The fourth proportional to 577.38, 866.06 and 553.08 is: 829.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.38 : 866.06 = 553.08 : x
  2. Step 2: Convert to fraction form
    577.38/866.06 = 553.08/x
  3. Step 3: Cross multiply
    577.38x = 866.06 × 553.08
  4. Step 4: Simplify right side
    577.38x = 479,000.46
  5. Step 5: Solve for x
    x = 479,000.46/577.38
  6. Step 6: Final answer
    x = 829.61

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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.