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Finding the Fourth Proportional to 590.66, 885.30 and 385.34

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Solution

The fourth proportional to 590.66, 885.30 and 385.34 is: 577.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.66 : 885.30 = 385.34 : x
  2. Step 2: Convert to fraction form
    590.66/885.30 = 385.34/x
  3. Step 3: Cross multiply
    590.66x = 885.30 × 385.34
  4. Step 4: Simplify right side
    590.66x = 341,141.50
  5. Step 5: Solve for x
    x = 341,141.50/590.66
  6. Step 6: Final answer
    x = 577.56

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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.