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Finding the Fourth Proportional to 448.63, 619.37 and 282.98

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Solution

The fourth proportional to 448.63, 619.37 and 282.98 is: 390.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.63 : 619.37 = 282.98 : x
  2. Step 2: Convert to fraction form
    448.63/619.37 = 282.98/x
  3. Step 3: Cross multiply
    448.63x = 619.37 × 282.98
  4. Step 4: Simplify right side
    448.63x = 175,267.91
  5. Step 5: Solve for x
    x = 175,267.91/448.63
  6. Step 6: Final answer
    x = 390.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.