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Finding the Fourth Proportional to 577.10, 864.50 and 345.34

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Solution

The fourth proportional to 577.10, 864.50 and 345.34 is: 517.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.10 : 864.50 = 345.34 : x
  2. Step 2: Convert to fraction form
    577.10/864.50 = 345.34/x
  3. Step 3: Cross multiply
    577.10x = 864.50 × 345.34
  4. Step 4: Simplify right side
    577.10x = 298,545.13
  5. Step 5: Solve for x
    x = 298,545.13/577.10
  6. Step 6: Final answer
    x = 517.32

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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.