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Finding the Fourth Proportional to 551.82, 761.72 and 375.70

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Solution

The fourth proportional to 551.82, 761.72 and 375.70 is: 518.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.82 : 761.72 = 375.70 : x
  2. Step 2: Convert to fraction form
    551.82/761.72 = 375.70/x
  3. Step 3: Cross multiply
    551.82x = 761.72 × 375.70
  4. Step 4: Simplify right side
    551.82x = 286,178.20
  5. Step 5: Solve for x
    x = 286,178.20/551.82
  6. Step 6: Final answer
    x = 518.61

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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.