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Finding the Fourth Proportional to 901.19, 1,349.34 and 753.77

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Solution

The fourth proportional to 901.19, 1,349.34 and 753.77 is: 1,128.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.19 : 1,349.34 = 753.77 : x
  2. Step 2: Convert to fraction form
    901.19/1,349.34 = 753.77/x
  3. Step 3: Cross multiply
    901.19x = 1,349.34 × 753.77
  4. Step 4: Simplify right side
    901.19x = 1,017,092.01
  5. Step 5: Solve for x
    x = 1,017,092.01/901.19
  6. Step 6: Final answer
    x = 1,128.61

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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.