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Finding the Fourth Proportional to 498.08, 686.38 and 373.88

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Solution

The fourth proportional to 498.08, 686.38 and 373.88 is: 515.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.08 : 686.38 = 373.88 : x
  2. Step 2: Convert to fraction form
    498.08/686.38 = 373.88/x
  3. Step 3: Cross multiply
    498.08x = 686.38 × 373.88
  4. Step 4: Simplify right side
    498.08x = 256,623.75
  5. Step 5: Solve for x
    x = 256,623.75/498.08
  6. Step 6: Final answer
    x = 515.23

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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.