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Finding the Fourth Proportional to 726.37, 1,089.56 and 510.91

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Solution

The fourth proportional to 726.37, 1,089.56 and 510.91 is: 766.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    726.37 : 1,089.56 = 510.91 : x
  2. Step 2: Convert to fraction form
    726.37/1,089.56 = 510.91/x
  3. Step 3: Cross multiply
    726.37x = 1,089.56 × 510.91
  4. Step 4: Simplify right side
    726.37x = 556,667.10
  5. Step 5: Solve for x
    x = 556,667.10/726.37
  6. Step 6: Final answer
    x = 766.37

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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.