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Finding the Fourth Proportional to 356.76, 532.89 and 316.44

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Solution

The fourth proportional to 356.76, 532.89 and 316.44 is: 472.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.76 : 532.89 = 316.44 : x
  2. Step 2: Convert to fraction form
    356.76/532.89 = 316.44/x
  3. Step 3: Cross multiply
    356.76x = 532.89 × 316.44
  4. Step 4: Simplify right side
    356.76x = 168,627.71
  5. Step 5: Solve for x
    x = 168,627.71/356.76
  6. Step 6: Final answer
    x = 472.66

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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.