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Finding the Fourth Proportional to 315.05, 471.69 and 237.77

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Solution

The fourth proportional to 315.05, 471.69 and 237.77 is: 355.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.05 : 471.69 = 237.77 : x
  2. Step 2: Convert to fraction form
    315.05/471.69 = 237.77/x
  3. Step 3: Cross multiply
    315.05x = 471.69 × 237.77
  4. Step 4: Simplify right side
    315.05x = 112,153.73
  5. Step 5: Solve for x
    x = 112,153.73/315.05
  6. Step 6: Final answer
    x = 355.99

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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.