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Finding the Fourth Proportional to 224.79, 309.65 and 187.93

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Solution

The fourth proportional to 224.79, 309.65 and 187.93 is: 258.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.79 : 309.65 = 187.93 : x
  2. Step 2: Convert to fraction form
    224.79/309.65 = 187.93/x
  3. Step 3: Cross multiply
    224.79x = 309.65 × 187.93
  4. Step 4: Simplify right side
    224.79x = 58,192.52
  5. Step 5: Solve for x
    x = 58,192.52/224.79
  6. Step 6: Final answer
    x = 258.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.