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Finding the Fourth Proportional to 373.70, 561.01 and 211.50

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Solution

The fourth proportional to 373.70, 561.01 and 211.50 is: 317.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.70 : 561.01 = 211.50 : x
  2. Step 2: Convert to fraction form
    373.70/561.01 = 211.50/x
  3. Step 3: Cross multiply
    373.70x = 561.01 × 211.50
  4. Step 4: Simplify right side
    373.70x = 118,653.62
  5. Step 5: Solve for x
    x = 118,653.62/373.70
  6. Step 6: Final answer
    x = 317.51

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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.