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Finding the Fourth Proportional to 745.17, 1,029.34 and 581.52

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Solution

The fourth proportional to 745.17, 1,029.34 and 581.52 is: 803.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    745.17 : 1,029.34 = 581.52 : x
  2. Step 2: Convert to fraction form
    745.17/1,029.34 = 581.52/x
  3. Step 3: Cross multiply
    745.17x = 1,029.34 × 581.52
  4. Step 4: Simplify right side
    745.17x = 598,581.80
  5. Step 5: Solve for x
    x = 598,581.80/745.17
  6. Step 6: Final answer
    x = 803.28

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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.