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Finding the Fourth Proportional to 243.04, 336 and 210.64

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Solution

The fourth proportional to 243.04, 336 and 210.64 is: 291.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.04 : 336 = 210.64 : x
  2. Step 2: Convert to fraction form
    243.04/336 = 210.64/x
  3. Step 3: Cross multiply
    243.04x = 336 × 210.64
  4. Step 4: Simplify right side
    243.04x = 70,775.04
  5. Step 5: Solve for x
    x = 70,775.04/243.04
  6. Step 6: Final answer
    x = 291.21

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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.