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Finding the Fourth Proportional to 356.86, 532.08 and 339.22

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Solution

The fourth proportional to 356.86, 532.08 and 339.22 is: 505.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.86 : 532.08 = 339.22 : x
  2. Step 2: Convert to fraction form
    356.86/532.08 = 339.22/x
  3. Step 3: Cross multiply
    356.86x = 532.08 × 339.22
  4. Step 4: Simplify right side
    356.86x = 180,492.18
  5. Step 5: Solve for x
    x = 180,492.18/356.86
  6. Step 6: Final answer
    x = 505.78

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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.