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Finding the Fourth Proportional to 577.06, 864.72 and 384.28

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Solution

The fourth proportional to 577.06, 864.72 and 384.28 is: 575.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.06 : 864.72 = 384.28 : x
  2. Step 2: Convert to fraction form
    577.06/864.72 = 384.28/x
  3. Step 3: Cross multiply
    577.06x = 864.72 × 384.28
  4. Step 4: Simplify right side
    577.06x = 332,294.60
  5. Step 5: Solve for x
    x = 332,294.60/577.06
  6. Step 6: Final answer
    x = 575.84

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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.