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Finding the Fourth Proportional to 573.19, 860.21 and 443.51

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Solution

The fourth proportional to 573.19, 860.21 and 443.51 is: 665.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.19 : 860.21 = 443.51 : x
  2. Step 2: Convert to fraction form
    573.19/860.21 = 443.51/x
  3. Step 3: Cross multiply
    573.19x = 860.21 × 443.51
  4. Step 4: Simplify right side
    573.19x = 381,509.52
  5. Step 5: Solve for x
    x = 381,509.52/573.19
  6. Step 6: Final answer
    x = 665.59

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.