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Finding the Fourth Proportional to 430.71, 594.19 and 287.02

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Solution

The fourth proportional to 430.71, 594.19 and 287.02 is: 395.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.71 : 594.19 = 287.02 : x
  2. Step 2: Convert to fraction form
    430.71/594.19 = 287.02/x
  3. Step 3: Cross multiply
    430.71x = 594.19 × 287.02
  4. Step 4: Simplify right side
    430.71x = 170,542.98
  5. Step 5: Solve for x
    x = 170,542.98/430.71
  6. Step 6: Final answer
    x = 395.96

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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.