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Finding the Fourth Proportional to 448.86, 668.46 and 437.22

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Solution

The fourth proportional to 448.86, 668.46 and 437.22 is: 651.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.86 : 668.46 = 437.22 : x
  2. Step 2: Convert to fraction form
    448.86/668.46 = 437.22/x
  3. Step 3: Cross multiply
    448.86x = 668.46 × 437.22
  4. Step 4: Simplify right side
    448.86x = 292,264.08
  5. Step 5: Solve for x
    x = 292,264.08/448.86
  6. Step 6: Final answer
    x = 651.13

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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.