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Finding the Fourth Proportional to 374.10, 515.49 and 263.70

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Solution

The fourth proportional to 374.10, 515.49 and 263.70 is: 363.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.10 : 515.49 = 263.70 : x
  2. Step 2: Convert to fraction form
    374.10/515.49 = 263.70/x
  3. Step 3: Cross multiply
    374.10x = 515.49 × 263.70
  4. Step 4: Simplify right side
    374.10x = 135,934.71
  5. Step 5: Solve for x
    x = 135,934.71/374.10
  6. Step 6: Final answer
    x = 363.36

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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.