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Finding the Fourth Proportional to 901.65, 1,244.31 and 508.71

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Solution

The fourth proportional to 901.65, 1,244.31 and 508.71 is: 702.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.65 : 1,244.31 = 508.71 : x
  2. Step 2: Convert to fraction form
    901.65/1,244.31 = 508.71/x
  3. Step 3: Cross multiply
    901.65x = 1,244.31 × 508.71
  4. Step 4: Simplify right side
    901.65x = 632,992.94
  5. Step 5: Solve for x
    x = 632,992.94/901.65
  6. Step 6: Final answer
    x = 702.04

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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.