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Finding the Fourth Proportional to 332.31, 495.53 and 309.22

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Solution

The fourth proportional to 332.31, 495.53 and 309.22 is: 461.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    332.31 : 495.53 = 309.22 : x
  2. Step 2: Convert to fraction form
    332.31/495.53 = 309.22/x
  3. Step 3: Cross multiply
    332.31x = 495.53 × 309.22
  4. Step 4: Simplify right side
    332.31x = 153,227.79
  5. Step 5: Solve for x
    x = 153,227.79/332.31
  6. Step 6: Final answer
    x = 461.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.