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Finding the Fourth Proportional to 373.88, 561.18 and 277.40

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Solution

The fourth proportional to 373.88, 561.18 and 277.40 is: 416.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.88 : 561.18 = 277.40 : x
  2. Step 2: Convert to fraction form
    373.88/561.18 = 277.40/x
  3. Step 3: Cross multiply
    373.88x = 561.18 × 277.40
  4. Step 4: Simplify right side
    373.88x = 155,671.33
  5. Step 5: Solve for x
    x = 155,671.33/373.88
  6. Step 6: Final answer
    x = 416.37

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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.