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Finding the Fourth Proportional to 901.70, 1,244.36 and 508.72

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Solution

The fourth proportional to 901.70, 1,244.36 and 508.72 is: 702.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.70 : 1,244.36 = 508.72 : x
  2. Step 2: Convert to fraction form
    901.70/1,244.36 = 508.72/x
  3. Step 3: Cross multiply
    901.70x = 1,244.36 × 508.72
  4. Step 4: Simplify right side
    901.70x = 633,030.82
  5. Step 5: Solve for x
    x = 633,030.82/901.70
  6. Step 6: Final answer
    x = 702.04

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1.5x scale

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.