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Finding the Fourth Proportional to 380.30, 524.69 and 263.93

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Solution

The fourth proportional to 380.30, 524.69 and 263.93 is: 364.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.30 : 524.69 = 263.93 : x
  2. Step 2: Convert to fraction form
    380.30/524.69 = 263.93/x
  3. Step 3: Cross multiply
    380.30x = 524.69 × 263.93
  4. Step 4: Simplify right side
    380.30x = 138,477.49
  5. Step 5: Solve for x
    x = 138,477.49/380.30
  6. Step 6: Final answer
    x = 364.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.