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Finding the Fourth Proportional to 499.10, 751.98 and 459.74

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Solution

The fourth proportional to 499.10, 751.98 and 459.74 is: 692.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.10 : 751.98 = 459.74 : x
  2. Step 2: Convert to fraction form
    499.10/751.98 = 459.74/x
  3. Step 3: Cross multiply
    499.10x = 751.98 × 459.74
  4. Step 4: Simplify right side
    499.10x = 345,715.29
  5. Step 5: Solve for x
    x = 345,715.29/499.10
  6. Step 6: Final answer
    x = 692.68

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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.