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Finding the Fourth Proportional to 561.81, 775.62 and 375.92

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Solution

The fourth proportional to 561.81, 775.62 and 375.92 is: 518.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.81 : 775.62 = 375.92 : x
  2. Step 2: Convert to fraction form
    561.81/775.62 = 375.92/x
  3. Step 3: Cross multiply
    561.81x = 775.62 × 375.92
  4. Step 4: Simplify right side
    561.81x = 291,567.19
  5. Step 5: Solve for x
    x = 291,567.19/561.81
  6. Step 6: Final answer
    x = 518.98

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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.