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Finding the Fourth Proportional to 317.02, 474.96 and 252.76

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Solution

The fourth proportional to 317.02, 474.96 and 252.76 is: 378.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.02 : 474.96 = 252.76 : x
  2. Step 2: Convert to fraction form
    317.02/474.96 = 252.76/x
  3. Step 3: Cross multiply
    317.02x = 474.96 × 252.76
  4. Step 4: Simplify right side
    317.02x = 120,050.89
  5. Step 5: Solve for x
    x = 120,050.89/317.02
  6. Step 6: Final answer
    x = 378.69

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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.