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Finding the Fourth Proportional to 995.29, 1,491.72 and 508.08

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Solution

The fourth proportional to 995.29, 1,491.72 and 508.08 is: 761.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.29 : 1,491.72 = 508.08 : x
  2. Step 2: Convert to fraction form
    995.29/1,491.72 = 508.08/x
  3. Step 3: Cross multiply
    995.29x = 1,491.72 × 508.08
  4. Step 4: Simplify right side
    995.29x = 757,913.10
  5. Step 5: Solve for x
    x = 757,913.10/995.29
  6. Step 6: Final answer
    x = 761.50

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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.