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Finding the Fourth Proportional to 469.61, 704.42 and 253.61

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Solution

The fourth proportional to 469.61, 704.42 and 253.61 is: 380.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.61 : 704.42 = 253.61 : x
  2. Step 2: Convert to fraction form
    469.61/704.42 = 253.61/x
  3. Step 3: Cross multiply
    469.61x = 704.42 × 253.61
  4. Step 4: Simplify right side
    469.61x = 178,643.17
  5. Step 5: Solve for x
    x = 178,643.17/469.61
  6. Step 6: Final answer
    x = 380.41

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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.