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Finding the Fourth Proportional to 215.02, 297.98 and 210.92

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Solution

The fourth proportional to 215.02, 297.98 and 210.92 is: 292.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.02 : 297.98 = 210.92 : x
  2. Step 2: Convert to fraction form
    215.02/297.98 = 210.92/x
  3. Step 3: Cross multiply
    215.02x = 297.98 × 210.92
  4. Step 4: Simplify right side
    215.02x = 62,847.40
  5. Step 5: Solve for x
    x = 62,847.40/215.02
  6. Step 6: Final answer
    x = 292.29

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.