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Finding the Fourth Proportional to 430.46, 594.22 and 290.66

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Solution

The fourth proportional to 430.46, 594.22 and 290.66 is: 401.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.46 : 594.22 = 290.66 : x
  2. Step 2: Convert to fraction form
    430.46/594.22 = 290.66/x
  3. Step 3: Cross multiply
    430.46x = 594.22 × 290.66
  4. Step 4: Simplify right side
    430.46x = 172,715.99
  5. Step 5: Solve for x
    x = 172,715.99/430.46
  6. Step 6: Final answer
    x = 401.24

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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.