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Finding the Fourth Proportional to 1,065.39, 1,470.14 and 593.31

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Solution

The fourth proportional to 1,065.39, 1,470.14 and 593.31 is: 818.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065.39 : 1,470.14 = 593.31 : x
  2. Step 2: Convert to fraction form
    1,065.39/1,470.14 = 593.31/x
  3. Step 3: Cross multiply
    1,065.39x = 1,470.14 × 593.31
  4. Step 4: Simplify right side
    1,065.39x = 872,240.28
  5. Step 5: Solve for x
    x = 872,240.28/1,065.39
  6. Step 6: Final answer
    x = 818.71

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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.