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Finding the Fourth Proportional to 297.58, 409.76 and 263.91

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Solution

The fourth proportional to 297.58, 409.76 and 263.91 is: 363.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.58 : 409.76 = 263.91 : x
  2. Step 2: Convert to fraction form
    297.58/409.76 = 263.91/x
  3. Step 3: Cross multiply
    297.58x = 409.76 × 263.91
  4. Step 4: Simplify right side
    297.58x = 108,139.76
  5. Step 5: Solve for x
    x = 108,139.76/297.58
  6. Step 6: Final answer
    x = 363.40

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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.