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Finding the Fourth Proportional to 499.93, 750.40 and 345.32

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Solution

The fourth proportional to 499.93, 750.40 and 345.32 is: 518.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.93 : 750.40 = 345.32 : x
  2. Step 2: Convert to fraction form
    499.93/750.40 = 345.32/x
  3. Step 3: Cross multiply
    499.93x = 750.40 × 345.32
  4. Step 4: Simplify right side
    499.93x = 259,126.40
  5. Step 5: Solve for x
    x = 259,126.40/499.93
  6. Step 6: Final answer
    x = 518.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.