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Finding the Fourth Proportional to 732.27, 1,010.37 and 421.77

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Solution

The fourth proportional to 732.27, 1,010.37 and 421.77 is: 581.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.27 : 1,010.37 = 421.77 : x
  2. Step 2: Convert to fraction form
    732.27/1,010.37 = 421.77/x
  3. Step 3: Cross multiply
    732.27x = 1,010.37 × 421.77
  4. Step 4: Simplify right side
    732.27x = 426,143.75
  5. Step 5: Solve for x
    x = 426,143.75/732.27
  6. Step 6: Final answer
    x = 581.95

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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.