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Finding the Fourth Proportional to 448.16, 671.16 and 293.64

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Solution

The fourth proportional to 448.16, 671.16 and 293.64 is: 439.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.16 : 671.16 = 293.64 : x
  2. Step 2: Convert to fraction form
    448.16/671.16 = 293.64/x
  3. Step 3: Cross multiply
    448.16x = 671.16 × 293.64
  4. Step 4: Simplify right side
    448.16x = 197,079.42
  5. Step 5: Solve for x
    x = 197,079.42/448.16
  6. Step 6: Final answer
    x = 439.75

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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.