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Finding the Fourth Proportional to 374.68, 561.65 and 155.27

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Solution

The fourth proportional to 374.68, 561.65 and 155.27 is: 232.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.68 : 561.65 = 155.27 : x
  2. Step 2: Convert to fraction form
    374.68/561.65 = 155.27/x
  3. Step 3: Cross multiply
    374.68x = 561.65 × 155.27
  4. Step 4: Simplify right side
    374.68x = 87,208.02
  5. Step 5: Solve for x
    x = 87,208.02/374.68
  6. Step 6: Final answer
    x = 232.75

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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.