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Finding the Fourth Proportional to 448.57, 672.65 and 174.45

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Solution

The fourth proportional to 448.57, 672.65 and 174.45 is: 261.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.57 : 672.65 = 174.45 : x
  2. Step 2: Convert to fraction form
    448.57/672.65 = 174.45/x
  3. Step 3: Cross multiply
    448.57x = 672.65 × 174.45
  4. Step 4: Simplify right side
    448.57x = 117,343.79
  5. Step 5: Solve for x
    x = 117,343.79/448.57
  6. Step 6: Final answer
    x = 261.60

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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.