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Finding the Fourth Proportional to 374.84, 562.26 and 155.40

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Solution

The fourth proportional to 374.84, 562.26 and 155.40 is: 233.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.84 : 562.26 = 155.40 : x
  2. Step 2: Convert to fraction form
    374.84/562.26 = 155.40/x
  3. Step 3: Cross multiply
    374.84x = 562.26 × 155.40
  4. Step 4: Simplify right side
    374.84x = 87,375.20
  5. Step 5: Solve for x
    x = 87,375.20/374.84
  6. Step 6: Final answer
    x = 233.10

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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.