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Finding the Fourth Proportional to 448.02, 667.13 and 424.26

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Solution

The fourth proportional to 448.02, 667.13 and 424.26 is: 631.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.02 : 667.13 = 424.26 : x
  2. Step 2: Convert to fraction form
    448.02/667.13 = 424.26/x
  3. Step 3: Cross multiply
    448.02x = 667.13 × 424.26
  4. Step 4: Simplify right side
    448.02x = 283,034.45
  5. Step 5: Solve for x
    x = 283,034.45/448.02
  6. Step 6: Final answer
    x = 631.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.