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Finding the Fourth Proportional to 272.57, 375.89 and 210.30

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Solution

The fourth proportional to 272.57, 375.89 and 210.30 is: 290.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.57 : 375.89 = 210.30 : x
  2. Step 2: Convert to fraction form
    272.57/375.89 = 210.30/x
  3. Step 3: Cross multiply
    272.57x = 375.89 × 210.30
  4. Step 4: Simplify right side
    272.57x = 79,051.13
  5. Step 5: Solve for x
    x = 79,051.13/272.57
  6. Step 6: Final answer
    x = 290.02

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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.