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Finding the Fourth Proportional to 619.17, 853.72 and 508.29

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Solution

The fourth proportional to 619.17, 853.72 and 508.29 is: 700.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.17 : 853.72 = 508.29 : x
  2. Step 2: Convert to fraction form
    619.17/853.72 = 508.29/x
  3. Step 3: Cross multiply
    619.17x = 853.72 × 508.29
  4. Step 4: Simplify right side
    619.17x = 433,937.34
  5. Step 5: Solve for x
    x = 433,937.34/619.17
  6. Step 6: Final answer
    x = 700.84

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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.