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Finding the Fourth Proportional to 307.16, 460.25 and 261.32

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Solution

The fourth proportional to 307.16, 460.25 and 261.32 is: 391.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.16 : 460.25 = 261.32 : x
  2. Step 2: Convert to fraction form
    307.16/460.25 = 261.32/x
  3. Step 3: Cross multiply
    307.16x = 460.25 × 261.32
  4. Step 4: Simplify right side
    307.16x = 120,272.53
  5. Step 5: Solve for x
    x = 120,272.53/307.16
  6. Step 6: Final answer
    x = 391.56

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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.