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Finding the Fourth Proportional to 360.66, 498.63 and 278.04

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Solution

The fourth proportional to 360.66, 498.63 and 278.04 is: 384.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.66 : 498.63 = 278.04 : x
  2. Step 2: Convert to fraction form
    360.66/498.63 = 278.04/x
  3. Step 3: Cross multiply
    360.66x = 498.63 × 278.04
  4. Step 4: Simplify right side
    360.66x = 138,639.09
  5. Step 5: Solve for x
    x = 138,639.09/360.66
  6. Step 6: Final answer
    x = 384.40

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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.