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Finding the Fourth Proportional to 210.08, 313.72 and 207.82

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Solution

The fourth proportional to 210.08, 313.72 and 207.82 is: 310.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.08 : 313.72 = 207.82 : x
  2. Step 2: Convert to fraction form
    210.08/313.72 = 207.82/x
  3. Step 3: Cross multiply
    210.08x = 313.72 × 207.82
  4. Step 4: Simplify right side
    210.08x = 65,197.29
  5. Step 5: Solve for x
    x = 65,197.29/210.08
  6. Step 6: Final answer
    x = 310.35

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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.