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Finding the Fourth Proportional to 315.18, 433.89 and 271.26

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Solution

The fourth proportional to 315.18, 433.89 and 271.26 is: 373.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.18 : 433.89 = 271.26 : x
  2. Step 2: Convert to fraction form
    315.18/433.89 = 271.26/x
  3. Step 3: Cross multiply
    315.18x = 433.89 × 271.26
  4. Step 4: Simplify right side
    315.18x = 117,697.00
  5. Step 5: Solve for x
    x = 117,697.00/315.18
  6. Step 6: Final answer
    x = 373.43

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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.