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Finding the Fourth Proportional to 448.92, 619.47 and 283.50

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Solution

The fourth proportional to 448.92, 619.47 and 283.50 is: 391.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.92 : 619.47 = 283.50 : x
  2. Step 2: Convert to fraction form
    448.92/619.47 = 283.50/x
  3. Step 3: Cross multiply
    448.92x = 619.47 × 283.50
  4. Step 4: Simplify right side
    448.92x = 175,619.75
  5. Step 5: Solve for x
    x = 175,619.75/448.92
  6. Step 6: Final answer
    x = 391.20

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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.