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Finding the Fourth Proportional to 551.33, 760.62 and 315.26

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Solution

The fourth proportional to 551.33, 760.62 and 315.26 is: 434.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.33 : 760.62 = 315.26 : x
  2. Step 2: Convert to fraction form
    551.33/760.62 = 315.26/x
  3. Step 3: Cross multiply
    551.33x = 760.62 × 315.26
  4. Step 4: Simplify right side
    551.33x = 239,789.26
  5. Step 5: Solve for x
    x = 239,789.26/551.33
  6. Step 6: Final answer
    x = 434.93

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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.