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Finding the Fourth Proportional to 340.05, 509.54 and 263.20

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Solution

The fourth proportional to 340.05, 509.54 and 263.20 is: 394.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.05 : 509.54 = 263.20 : x
  2. Step 2: Convert to fraction form
    340.05/509.54 = 263.20/x
  3. Step 3: Cross multiply
    340.05x = 509.54 × 263.20
  4. Step 4: Simplify right side
    340.05x = 134,110.93
  5. Step 5: Solve for x
    x = 134,110.93/340.05
  6. Step 6: Final answer
    x = 394.39

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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.