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Finding the Fourth Proportional to 210.68, 313.76 and 202.48

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Solution

The fourth proportional to 210.68, 313.76 and 202.48 is: 301.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.68 : 313.76 = 202.48 : x
  2. Step 2: Convert to fraction form
    210.68/313.76 = 202.48/x
  3. Step 3: Cross multiply
    210.68x = 313.76 × 202.48
  4. Step 4: Simplify right side
    210.68x = 63,530.12
  5. Step 5: Solve for x
    x = 63,530.12/210.68
  6. Step 6: Final answer
    x = 301.55

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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.