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Finding the Fourth Proportional to 753.29, 1,127.52 and 491.19

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Solution

The fourth proportional to 753.29, 1,127.52 and 491.19 is: 735.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    753.29 : 1,127.52 = 491.19 : x
  2. Step 2: Convert to fraction form
    753.29/1,127.52 = 491.19/x
  3. Step 3: Cross multiply
    753.29x = 1,127.52 × 491.19
  4. Step 4: Simplify right side
    753.29x = 553,826.55
  5. Step 5: Solve for x
    x = 553,826.55/753.29
  6. Step 6: Final answer
    x = 735.22

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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.