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Finding the Fourth Proportional to 607.79, 912.48 and 361.44

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Solution

The fourth proportional to 607.79, 912.48 and 361.44 is: 542.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.79 : 912.48 = 361.44 : x
  2. Step 2: Convert to fraction form
    607.79/912.48 = 361.44/x
  3. Step 3: Cross multiply
    607.79x = 912.48 × 361.44
  4. Step 4: Simplify right side
    607.79x = 329,806.77
  5. Step 5: Solve for x
    x = 329,806.77/607.79
  6. Step 6: Final answer
    x = 542.63

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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.