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Finding the Fourth Proportional to 1,039.56, 1,434.68 and 597.61

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Solution

The fourth proportional to 1,039.56, 1,434.68 and 597.61 is: 824.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039.56 : 1,434.68 = 597.61 : x
  2. Step 2: Convert to fraction form
    1,039.56/1,434.68 = 597.61/x
  3. Step 3: Cross multiply
    1,039.56x = 1,434.68 × 597.61
  4. Step 4: Simplify right side
    1,039.56x = 857,379.11
  5. Step 5: Solve for x
    x = 857,379.11/1,039.56
  6. Step 6: Final answer
    x = 824.75

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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.