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Finding the Fourth Proportional to 370.04, 556.96 and 279.20

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Solution

The fourth proportional to 370.04, 556.96 and 279.20 is: 420.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.04 : 556.96 = 279.20 : x
  2. Step 2: Convert to fraction form
    370.04/556.96 = 279.20/x
  3. Step 3: Cross multiply
    370.04x = 556.96 × 279.20
  4. Step 4: Simplify right side
    370.04x = 155,503.23
  5. Step 5: Solve for x
    x = 155,503.23/370.04
  6. Step 6: Final answer
    x = 420.23

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.