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Finding the Fourth Proportional to 292.74, 403.80 and 210.12

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Solution

The fourth proportional to 292.74, 403.80 and 210.12 is: 289.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.74 : 403.80 = 210.12 : x
  2. Step 2: Convert to fraction form
    292.74/403.80 = 210.12/x
  3. Step 3: Cross multiply
    292.74x = 403.80 × 210.12
  4. Step 4: Simplify right side
    292.74x = 84,846.46
  5. Step 5: Solve for x
    x = 84,846.46/292.74
  6. Step 6: Final answer
    x = 289.84

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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.