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Finding the Fourth Proportional to 619.14, 853.50 and 471.51

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Solution

The fourth proportional to 619.14, 853.50 and 471.51 is: 650.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.14 : 853.50 = 471.51 : x
  2. Step 2: Convert to fraction form
    619.14/853.50 = 471.51/x
  3. Step 3: Cross multiply
    619.14x = 853.50 × 471.51
  4. Step 4: Simplify right side
    619.14x = 402,438.75
  5. Step 5: Solve for x
    x = 402,438.75/619.14
  6. Step 6: Final answer
    x = 650.00

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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.