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Finding the Fourth Proportional to 375.12, 562.61 and 155.70

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Solution

The fourth proportional to 375.12, 562.61 and 155.70 is: 233.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.12 : 562.61 = 155.70 : x
  2. Step 2: Convert to fraction form
    375.12/562.61 = 155.70/x
  3. Step 3: Cross multiply
    375.12x = 562.61 × 155.70
  4. Step 4: Simplify right side
    375.12x = 87,598.77
  5. Step 5: Solve for x
    x = 87,598.77/375.12
  6. Step 6: Final answer
    x = 233.52

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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.