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Finding the Fourth Proportional to 544.76, 751.90 and 312.02

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Solution

The fourth proportional to 544.76, 751.90 and 312.02 is: 430.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.76 : 751.90 = 312.02 : x
  2. Step 2: Convert to fraction form
    544.76/751.90 = 312.02/x
  3. Step 3: Cross multiply
    544.76x = 751.90 × 312.02
  4. Step 4: Simplify right side
    544.76x = 234,607.84
  5. Step 5: Solve for x
    x = 234,607.84/544.76
  6. Step 6: Final answer
    x = 430.66

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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.