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Finding the Fourth Proportional to 386.46, 532.50 and 339.30

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Solution

The fourth proportional to 386.46, 532.50 and 339.30 is: 467.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.46 : 532.50 = 339.30 : x
  2. Step 2: Convert to fraction form
    386.46/532.50 = 339.30/x
  3. Step 3: Cross multiply
    386.46x = 532.50 × 339.30
  4. Step 4: Simplify right side
    386.46x = 180,677.25
  5. Step 5: Solve for x
    x = 180,677.25/386.46
  6. Step 6: Final answer
    x = 467.52

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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.