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Finding the Fourth Proportional to 557.27, 836.40 and 265.13

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Solution

The fourth proportional to 557.27, 836.40 and 265.13 is: 397.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.27 : 836.40 = 265.13 : x
  2. Step 2: Convert to fraction form
    557.27/836.40 = 265.13/x
  3. Step 3: Cross multiply
    557.27x = 836.40 × 265.13
  4. Step 4: Simplify right side
    557.27x = 221,754.73
  5. Step 5: Solve for x
    x = 221,754.73/557.27
  6. Step 6: Final answer
    x = 397.93

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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.