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Finding the Fourth Proportional to 1,039.26, 1,434.16 and 573.50

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Solution

The fourth proportional to 1,039.26, 1,434.16 and 573.50 is: 791.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039.26 : 1,434.16 = 573.50 : x
  2. Step 2: Convert to fraction form
    1,039.26/1,434.16 = 573.50/x
  3. Step 3: Cross multiply
    1,039.26x = 1,434.16 × 573.50
  4. Step 4: Simplify right side
    1,039.26x = 822,490.76
  5. Step 5: Solve for x
    x = 822,490.76/1,039.26
  6. Step 6: Final answer
    x = 791.42

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1.5x scale

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.