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Finding the Fourth Proportional to 430.38, 594.06 and 290.40

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Solution

The fourth proportional to 430.38, 594.06 and 290.40 is: 400.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.38 : 594.06 = 290.40 : x
  2. Step 2: Convert to fraction form
    430.38/594.06 = 290.40/x
  3. Step 3: Cross multiply
    430.38x = 594.06 × 290.40
  4. Step 4: Simplify right side
    430.38x = 172,515.02
  5. Step 5: Solve for x
    x = 172,515.02/430.38
  6. Step 6: Final answer
    x = 400.84

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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.