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Finding the Fourth Proportional to 356.70, 535.14 and 210.18

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Solution

The fourth proportional to 356.70, 535.14 and 210.18 is: 315.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.70 : 535.14 = 210.18 : x
  2. Step 2: Convert to fraction form
    356.70/535.14 = 210.18/x
  3. Step 3: Cross multiply
    356.70x = 535.14 × 210.18
  4. Step 4: Simplify right side
    356.70x = 112,475.73
  5. Step 5: Solve for x
    x = 112,475.73/356.70
  6. Step 6: Final answer
    x = 315.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.