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Finding the Fourth Proportional to 356.67, 531.97 and 307.33

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Solution

The fourth proportional to 356.67, 531.97 and 307.33 is: 458.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.67 : 531.97 = 307.33 : x
  2. Step 2: Convert to fraction form
    356.67/531.97 = 307.33/x
  3. Step 3: Cross multiply
    356.67x = 531.97 × 307.33
  4. Step 4: Simplify right side
    356.67x = 163,488.24
  5. Step 5: Solve for x
    x = 163,488.24/356.67
  6. Step 6: Final answer
    x = 458.37

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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.