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Finding the Fourth Proportional to 497.87, 686.64 and 373.80

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Solution

The fourth proportional to 497.87, 686.64 and 373.80 is: 515.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.87 : 686.64 = 373.80 : x
  2. Step 2: Convert to fraction form
    497.87/686.64 = 373.80/x
  3. Step 3: Cross multiply
    497.87x = 686.64 × 373.80
  4. Step 4: Simplify right side
    497.87x = 256,666.03
  5. Step 5: Solve for x
    x = 256,666.03/497.87
  6. Step 6: Final answer
    x = 515.53

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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.