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Finding the Fourth Proportional to 448.28, 617.60 and 337.60

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Solution

The fourth proportional to 448.28, 617.60 and 337.60 is: 465.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.28 : 617.60 = 337.60 : x
  2. Step 2: Convert to fraction form
    448.28/617.60 = 337.60/x
  3. Step 3: Cross multiply
    448.28x = 617.60 × 337.60
  4. Step 4: Simplify right side
    448.28x = 208,501.76
  5. Step 5: Solve for x
    x = 208,501.76/448.28
  6. Step 6: Final answer
    x = 465.12

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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.