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Finding the Fourth Proportional to 338.08, 506.40 and 307.48

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Solution

The fourth proportional to 338.08, 506.40 and 307.48 is: 460.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.08 : 506.40 = 307.48 : x
  2. Step 2: Convert to fraction form
    338.08/506.40 = 307.48/x
  3. Step 3: Cross multiply
    338.08x = 506.40 × 307.48
  4. Step 4: Simplify right side
    338.08x = 155,707.87
  5. Step 5: Solve for x
    x = 155,707.87/338.08
  6. Step 6: Final answer
    x = 460.57

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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.