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Finding the Fourth Proportional to 448.68, 672.66 and 171.02

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Solution

The fourth proportional to 448.68, 672.66 and 171.02 is: 256.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.68 : 672.66 = 171.02 : x
  2. Step 2: Convert to fraction form
    448.68/672.66 = 171.02/x
  3. Step 3: Cross multiply
    448.68x = 672.66 × 171.02
  4. Step 4: Simplify right side
    448.68x = 115,038.31
  5. Step 5: Solve for x
    x = 115,038.31/448.68
  6. Step 6: Final answer
    x = 256.39

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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.