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Finding the Fourth Proportional to 610.48, 914.93 and 263.40

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Solution

The fourth proportional to 610.48, 914.93 and 263.40 is: 394.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.48 : 914.93 = 263.40 : x
  2. Step 2: Convert to fraction form
    610.48/914.93 = 263.40/x
  3. Step 3: Cross multiply
    610.48x = 914.93 × 263.40
  4. Step 4: Simplify right side
    610.48x = 240,992.56
  5. Step 5: Solve for x
    x = 240,992.56/610.48
  6. Step 6: Final answer
    x = 394.76

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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.