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Finding the Fourth Proportional to 297.02, 407.70 and 271.10

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Solution

The fourth proportional to 297.02, 407.70 and 271.10 is: 372.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.02 : 407.70 = 271.10 : x
  2. Step 2: Convert to fraction form
    297.02/407.70 = 271.10/x
  3. Step 3: Cross multiply
    297.02x = 407.70 × 271.10
  4. Step 4: Simplify right side
    297.02x = 110,527.47
  5. Step 5: Solve for x
    x = 110,527.47/297.02
  6. Step 6: Final answer
    x = 372.12

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.