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Finding the Fourth Proportional to 317.86, 438.24 and 265.48

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Solution

The fourth proportional to 317.86, 438.24 and 265.48 is: 366.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.86 : 438.24 = 265.48 : x
  2. Step 2: Convert to fraction form
    317.86/438.24 = 265.48/x
  3. Step 3: Cross multiply
    317.86x = 438.24 × 265.48
  4. Step 4: Simplify right side
    317.86x = 116,343.96
  5. Step 5: Solve for x
    x = 116,343.96/317.86
  6. Step 6: Final answer
    x = 366.02

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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.