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Finding the Fourth Proportional to 210.88, 317.94 and 207.10

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Solution

The fourth proportional to 210.88, 317.94 and 207.10 is: 312.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.88 : 317.94 = 207.10 : x
  2. Step 2: Convert to fraction form
    210.88/317.94 = 207.10/x
  3. Step 3: Cross multiply
    210.88x = 317.94 × 207.10
  4. Step 4: Simplify right side
    210.88x = 65,846.74
  5. Step 5: Solve for x
    x = 65,846.74/210.88
  6. Step 6: Final answer
    x = 312.25

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.