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Finding the Fourth Proportional to 544.24, 751.08 and 311.40

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Solution

The fourth proportional to 544.24, 751.08 and 311.40 is: 429.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.24 : 751.08 = 311.40 : x
  2. Step 2: Convert to fraction form
    544.24/751.08 = 311.40/x
  3. Step 3: Cross multiply
    544.24x = 751.08 × 311.40
  4. Step 4: Simplify right side
    544.24x = 233,886.31
  5. Step 5: Solve for x
    x = 233,886.31/544.24
  6. Step 6: Final answer
    x = 429.75

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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.