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Finding the Fourth Proportional to 448.29, 672.54 and 346.86

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Solution

The fourth proportional to 448.29, 672.54 and 346.86 is: 520.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.29 : 672.54 = 346.86 : x
  2. Step 2: Convert to fraction form
    448.29/672.54 = 346.86/x
  3. Step 3: Cross multiply
    448.29x = 672.54 × 346.86
  4. Step 4: Simplify right side
    448.29x = 233,277.22
  5. Step 5: Solve for x
    x = 233,277.22/448.29
  6. Step 6: Final answer
    x = 520.37

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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.