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Finding the Fourth Proportional to 1,039.56, 1,434.60 and 597.49

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Solution

The fourth proportional to 1,039.56, 1,434.60 and 597.49 is: 824.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039.56 : 1,434.60 = 597.49 : x
  2. Step 2: Convert to fraction form
    1,039.56/1,434.60 = 597.49/x
  3. Step 3: Cross multiply
    1,039.56x = 1,434.60 × 597.49
  4. Step 4: Simplify right side
    1,039.56x = 857,159.15
  5. Step 5: Solve for x
    x = 857,159.15/1,039.56
  6. Step 6: Final answer
    x = 824.54

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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.