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Finding the Fourth Proportional to 498.15, 686.07 and 366.93

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Solution

The fourth proportional to 498.15, 686.07 and 366.93 is: 505.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.15 : 686.07 = 366.93 : x
  2. Step 2: Convert to fraction form
    498.15/686.07 = 366.93/x
  3. Step 3: Cross multiply
    498.15x = 686.07 × 366.93
  4. Step 4: Simplify right side
    498.15x = 251,739.67
  5. Step 5: Solve for x
    x = 251,739.67/498.15
  6. Step 6: Final answer
    x = 505.35

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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.