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Finding the Fourth Proportional to 824.26, 1,235.40 and 361.93

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Solution

The fourth proportional to 824.26, 1,235.40 and 361.93 is: 542.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    824.26 : 1,235.40 = 361.93 : x
  2. Step 2: Convert to fraction form
    824.26/1,235.40 = 361.93/x
  3. Step 3: Cross multiply
    824.26x = 1,235.40 × 361.93
  4. Step 4: Simplify right side
    824.26x = 447,128.32
  5. Step 5: Solve for x
    x = 447,128.32/824.26
  6. Step 6: Final answer
    x = 542.46

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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.