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Finding the Fourth Proportional to 225.17, 339.45 and 210.30

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Solution

The fourth proportional to 225.17, 339.45 and 210.30 is: 317.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.17 : 339.45 = 210.30 : x
  2. Step 2: Convert to fraction form
    225.17/339.45 = 210.30/x
  3. Step 3: Cross multiply
    225.17x = 339.45 × 210.30
  4. Step 4: Simplify right side
    225.17x = 71,386.34
  5. Step 5: Solve for x
    x = 71,386.34/225.17
  6. Step 6: Final answer
    x = 317.04

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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.