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Finding the Fourth Proportional to 551.94, 761.42 and 365.16

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Solution

The fourth proportional to 551.94, 761.42 and 365.16 is: 503.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.94 : 761.42 = 365.16 : x
  2. Step 2: Convert to fraction form
    551.94/761.42 = 365.16/x
  3. Step 3: Cross multiply
    551.94x = 761.42 × 365.16
  4. Step 4: Simplify right side
    551.94x = 278,040.13
  5. Step 5: Solve for x
    x = 278,040.13/551.94
  6. Step 6: Final answer
    x = 503.75

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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.