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Finding the Fourth Proportional to 375.30, 563.40 and 210.90

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Solution

The fourth proportional to 375.30, 563.40 and 210.90 is: 316.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.30 : 563.40 = 210.90 : x
  2. Step 2: Convert to fraction form
    375.30/563.40 = 210.90/x
  3. Step 3: Cross multiply
    375.30x = 563.40 × 210.90
  4. Step 4: Simplify right side
    375.30x = 118,821.06
  5. Step 5: Solve for x
    x = 118,821.06/375.30
  6. Step 6: Final answer
    x = 316.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.